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Targeted killing

Targeted killing refers to the intentional and premeditated use of lethal force by a state or organized armed group against a specific individual who is not in the perpetrator's physical custody or control, typically aimed at neutralizing threats such as terrorist leaders or militants.^[1] This practice distinguishes itself from broader military operations by its focus on precision strikes against pre-identified high-value targets, often justified under frameworks of self-defense or armed conflict paradigms in international law.^[2]^[3] The modern application of targeted killing emerged prominently through Israel's operations against Palestinian militants beginning in the late 20th century, evolving into a systematic counterterrorism strategy that influenced global practices, particularly the United States' post-9/11 drone campaigns in regions like Pakistan, Yemen, and Somalia.^[4]^[2] The U.S. program, expanded significantly during the Obama administration, has relied heavily on unmanned aerial vehicles for remote execution, enabling operations beyond traditional battlefields while minimizing risks to operators.^[5] Empirical analyses of these efforts reveal mixed outcomes: short-term disruptions to terrorist networks through leadership decapitation, yet limited long-term reductions in violence due to rapid replacement of targets and potential radicalization effects.^[6]^[7] Key controversies surrounding targeted killing center on its compatibility with international humanitarian law, including requirements for distinction between combatants and civilians, proportionality in assessing collateral damage, and the absence of judicial due process for those targeted.^[8] Critics argue it risks extrajudicial executions and sovereignty infringements, while proponents contend it adheres to lawful self-defense against imminent threats in non-international armed conflicts.^[3]^[9] Israel's Supreme Court ruling in 2006 upheld the practice under strict conditions, setting a precedent that balances security imperatives with legal constraints, though implementation has drawn scrutiny over civilian casualties in failed or proximate strikes.^[10] Overall, targeted killing exemplifies the tension between operational efficacy in asymmetric warfare and adherence to rule-of-law principles.

Definition and Scope

Core Definition

Targeted killing denotes the intentional and deliberate use of lethal force by a state or its agents against a pre-identified individual, typically a high-value target such as a suspected terrorist leader or combatant, who is not in the physical custody or control of the acting authority.^[11] This practice emphasizes precision in selection and execution, relying on intelligence to minimize collateral damage, though empirical data from U.S. drone operations in Pakistan between 2004 and 2013 indicate civilian casualties in approximately 10-20% of strikes, challenging claims of inherent low collateral impact.^[2] Under international law, the concept is framed as distinct from peacetime assassination, which U.S. Executive Order 12333 explicitly prohibits as the "murder for political purposes," by situating killings within paradigms of self-defense under Article 51 of the UN Charter or the laws of armed conflict, where targets are deemed lawful combatants or direct threats. Scholarly analyses, such as those by Nils Melzer, define it as "the use of lethal force attributable to a subject of international law, directed against a specific individual who is not in that state's custody or control, for the purpose of killing him," excluding captures when feasible but permitting force when detention poses undue risk.^[12] This framework has been invoked by Israel since the early 2000s for operations against militants in the West Bank and Gaza, and by the U.S. post-9/11 for strikes in Yemen, Somalia, and Pakistan, with over 500 drone strikes authorized under the Obama administration alone from 2009 to 2016.^[8] Key operational elements include a targeting cycle involving nomination, validation, and approval based on evidence of imminent threat or continuous participation in hostilities, as outlined in U.S. policy documents, though critics from human rights organizations argue such processes lack sufficient transparency and judicial oversight, potentially conflating them with extrajudicial executions. Empirical reviews of declassified data reveal that between 2002 and 2017, U.S. targeted killings in Yemen resulted in 81-184 civilian deaths alongside 846-1,141 combatants, underscoring the causal challenges in distinguishing non-combatants amid intelligence uncertainties. The practice's legality remains contested, with International Committee of the Red Cross guidance permitting it only against fighters actively participating in hostilities during non-international armed conflicts, but prohibiting it in law enforcement scenarios without immediate threat.^[13] Targeted killing differs from assassination primarily in its legal framing and context. Assassination is generally understood as the unlawful, premeditated murder of an individual for political, ideological, or similar motives, often involving treachery or violation of international norms against perfidy.^[14] In contrast, targeted killing refers to the deliberate use of lethal force by a state against a specific individual, typically justified under the law of armed conflict or anticipatory self-defense, where the target is deemed a lawful combatant or continuing threat, such as members of non-state armed groups in ongoing hostilities.^[15] United States policy, as articulated by legal advisors like Harold Koh, distinguishes the two by emphasizing that targeted killings in zones of active armed conflict do not constitute assassination, as they adhere to principles of distinction and necessity rather than clandestine murder.^[14] This separation aligns with Executive Order 12333, which prohibits assassination but permits lethal action against threats in lawful combat or self-defense scenarios.^[16] The concept also contrasts with extrajudicial execution, which involves the arbitrary deprivation of life without judicial process or adherence to human rights standards, often applied to civilians in peacetime custody or non-combat settings.^[17] Proponents of targeted killing argue it evades this category when conducted against combatants in non-international armed conflicts, where international humanitarian law supplants due process with rules governing military necessity, proportionality, and precautions against civilian harm, rather than requiring capture or trial.^[8] Critics, including some human rights analyses, contend that operations outside declared war zones or against non-combatants effectively amount to extrajudicial killings, bypassing safeguards like habeas corpus.^[18] Empirical assessments, such as those reviewing U.S. drone programs, highlight that targeting decisions incorporate intelligence vetting to assess imminent threats, aiming to differentiate from summary executions by invoking a framework of continuous combatant status.^[19] Further distinctions arise from broader warfare practices. Unlike general combat operations, which may involve indiscriminate or area-based engagements, targeted killing focuses on high-value individuals through precise intelligence-driven strikes, minimizing collateral effects as a matter of policy and law.^[20] It is not equivalent to post-capture execution, which follows adjudication, nor to peacetime law enforcement killings, which prioritize arrest over lethality under human rights regimes like the International Covenant on Civil and Political Rights.^[21] These boundaries, while debated in legal scholarship, underscore targeted killing's reliance on a paradigm of perpetual low-intensity conflict against transnational threats, as opposed to traditional state-on-state hostilities or domestic criminal justice.^[22]

Evolution of the Term

The term "targeted killing" emerged in the late 1990s as a descriptor for deliberate state-sponsored lethal operations against specific individuals identified as threats, particularly in non-traditional conflict settings, to differentiate such actions from proscribed assassinations. Prior to its widespread adoption, similar practices—such as selective eliminations of enemy leaders—occurred throughout history without this precise nomenclature, often labeled as assassination or covert operations under domestic or international prohibitions, including the U.S. Executive Order 12333 banning assassinations since 1981.^[23] The terminology gained traction amid Israel's response to the Second Intifada, where it described helicopter and other precision strikes against Palestinian militants planning attacks; Israel became the first state to publicly acknowledge and defend a formal policy of targeted killing around 2000, framing it as a necessary measure of self-defense under international law.^[24] Legal scrutiny formalized the term's contours, notably in Israel's 2006 Supreme Court ruling, which upheld targeted killings as permissible if based on reliable intelligence, conducted with proportionality, and followed by post-action review, thereby embedding it within just war theory principles like distinction and necessity.^[10] This judicial endorsement influenced global discourse, shifting the focus from moral taboo to operational and ethical parameters. Early academic analyses, such as David Kretzmer's 2002 examination in the European Journal of International Law, debated whether such killings constituted extrajudicial executions or legitimate self-defense, establishing the term's dual role as both a policy tool and a legal flashpoint. The United States accelerated the term's evolution post-September 11, 2001, applying it to CIA and military drone strikes against al-Qaeda and affiliated figures in Pakistan, Yemen, and Somalia, positioning targeted killing as an extension of armed conflict rather than peacetime assassination.^[2] U.S. policy documents and OLC memos from 2001–2010 justified it under Article 51 of the UN Charter for anticipatory self-defense, emphasizing intelligence-driven targeting to minimize collateral damage, though critics argued it blurred jus in bello and jus ad bellum boundaries.^[25] By the 2010s, the phrase permeated international relations literature and policy debates, with states like the UK and France invoking it for operations against ISIS, reflecting a normalization amid technological advances in precision weaponry, while raising concerns over accountability and sovereignty in extraterritorial applications.^[22] This progression underscores the term's transformation from a niche Israeli doctrinal concept to a cornerstone of asymmetric warfare lexicon, often critiqued for enabling executive overreach absent robust oversight.^[21]

Historical Context

Ancient and Pre-Modern Instances

In the Roman Republic, proscriptions enabled the systematic targeting of political adversaries through state-sanctioned lists authorizing their execution and property seizure. Following his victory over the Marian faction in the civil war of 82 BC, dictator Lucius Cornelius Sulla issued proscriptions beginning in late 82 or early 81 BC, declaring approximately 520 individuals public enemies whose killers would receive rewards equivalent to one talent of silver per head.^[26] This policy resulted in the deaths of over 90 senators and around 2,600 equestrians, according to the ancient historian Appian, with total casualties likely exceeding several thousand as opportunistic killings extended beyond the lists amid widespread terror in Rome.^[26] Plutarch estimates at least 1,500 executions in Rome and Italy alone, noting the auctions of victims' estates funded Sulla's veteran colonies.^[27] A subsequent instance occurred under the Second Triumvirate of Octavian, Mark Antony, and Marcus Aemilius Lepidus, formed in November 43 BC to avenge Julius Caesar's assassination earlier that year. The triumvirs proscribed about 300 senators and 2,000 equestrians, publishing names to eliminate opposition and finance their campaigns through confiscated fortunes, leading to summary executions including that of Cicero on December 7, 43 BC.^[28] These measures, justified as reprisals against Caesar's killers and their allies, echoed Sulla's tactics but intensified confiscations, with Appian recording over 100 senators slain in the initial wave.^[29] In the medieval Near East, the Nizari Ismaili sect, operating from fortresses like Alamut under Hassan-i Sabbah from 1090 onward, specialized in targeted assassinations against Sunni Muslim rulers and Crusader leaders as asymmetric warfare against superior forces. The fida'is, or devoted agents, publicly stabbed high-profile targets with daggers to maximize psychological impact, killing the Seljuk vizier Nizam al-Mulk on October 14, 1092, near Nahavand, and later figures such as Caliph al-Mustarshid in 1135.^[30] Over nearly 200 years until the Mongol destruction of their strongholds in 1256, the Order of Assassins conducted hundreds of such operations, often in broad daylight without escape plans, deterring invasions through fear of reprisal despite their small numbers.^[31]

20th Century Developments

During World War II, targeted killings emerged as deliberate operations against high-ranking enemy officials, exemplified by Operation Anthropoid, in which British-trained Czechoslovak agents assassinated Reinhard Heydrich, the acting Reichsprotektor of Bohemia and Moravia, on May 27, 1942, using a grenade attack in Prague.^[32] Heydrich, a key architect of the Holocaust and SS deputy leader, succumbed to his injuries on June 4, leading to severe Nazi reprisals including the destruction of Lidice village and execution of over 1,000 Czechs, underscoring the high risks and retaliatory costs of such actions.^[32] This operation represented a shift toward precision strikes on leadership to disrupt enemy command structures, distinct from broader combat but integrated into wartime resistance efforts.^[33] In the Cold War era, intelligence agencies systematized targeted killings against perceived threats, with the Soviet KGB conducting assassinations of defectors and dissidents, such as the 1940 ice axe murder of Leon Trotsky in Mexico by agent Ramón Mercader and the 1959 poisoning of Ukrainian nationalist Stepan Bandera in Munich using a cyanide pistol.^[34] The KGB's 13th Department specialized in such operations, employing poisons, shootings, and defections to eliminate exiles, often leaving ambiguous causes of death to evade attribution.^[35] Similarly, the U.S. Central Intelligence Agency pursued plots against foreign leaders, including multiple failed attempts on Fidel Castro from 1960 to 1965 involving poisoned cigars, exploding seashells, and Mafia intermediaries, as detailed in the 1975 Church Committee report, which implicated the CIA in at least eight such schemes against leaders like Patrice Lumumba and Ngo Dinh Diem.^[36]^[37] These efforts reflected ideological warfare but were curtailed by U.S. executive orders post-1976 prohibiting assassinations, highlighting emerging normative constraints despite persistent practice.^[38] The 1970s saw intensified regional campaigns, notably Israel's Mossad launching Operation Wrath of God in 1972 to eliminate Black September militants responsible for the Munich Olympics massacre, resulting in at least 11 successful assassinations across Europe using shootings, bombs, and tailored operations until the late 1970s, though marred by the mistaken killing of an innocent Moroccan waiter in Lillehammer, Norway, in 1973.^[39] In parallel, Operation Condor, a U.S.-backed alliance of South American dictatorships from 1975, coordinated the extrajudicial killings and disappearances of at least 50,000-80,000 left-wing opponents, including cross-border abductions and executions documented in declassified archives, with specific assassinations like that of Orlando Letelier in Washington, D.C., in 1976 via car bomb.^[40] These developments institutionalized targeted killing as a tool of counterinsurgency and counterterrorism, often transcending national borders and formal war, while exposing tensions with international law prohibiting peacetime assassinations.^[41]

Post-Cold War and 9/11 Acceleration

Following the end of the Cold War in 1991, Israel expanded its use of targeted killings against leaders of Palestinian militant groups and Hezbollah, incorporating the tactic into counterterrorism operations amid rising violence in the Israeli-Palestinian conflict.^[42] Operations in the early 1990s targeted Hezbollah figures, such as the 1992 killing of Abbas al-Musawi, reflecting a strategic shift toward preemptive elimination of operational planners to disrupt attacks.^[42] The United States, constrained by Executive Order 12333's prohibition on political assassinations, considered but largely refrained from such actions, though it authorized cruise missile strikes against al-Qaeda targets in 1998 following embassy bombings in Kenya and Tanzania.^[43] The September 11, 2001, attacks by al-Qaeda, which killed 2,977 people in the United States, prompted a doctrinal acceleration in targeted killings as a core element of U.S. counterterrorism.^[2] Congress passed the Authorization for Use of Military Force (AUMF) on September 18, 2001, enabling lethal operations against al-Qaeda and associated forces without geographic limits.^[2] The CIA conducted its first drone-based targeted killing on November 3, 2002, in Yemen, using a Predator missile to eliminate al-Qaeda operative Qaed Salim Sinan al-Harethi and five associates, marking the inception of remote aerial assassinations outside conventional battlefields.^[44] Under President George W. Bush, drone strikes remained limited, totaling 57 in Pakistan, Yemen, and Somalia from 2001 to 2008.^[45] The administration of President Barack Obama markedly escalated the program, authorizing 563 strikes in those countries over eight years, resulting in an estimated 2,372 to 2,581 deaths, including 384 to 807 civilians according to independent trackers.^[45] ^[46] This expansion included "signature strikes" based on behavioral patterns rather than individual identification, conducted primarily by CIA-operated Predators and Reapers, and extended to high-value targets like Anwar al-Awlaki, a U.S. citizen killed in Yemen on September 30, 2011.^[2] Such operations disrupted al-Qaeda leadership but drew scrutiny for potential civilian casualties and legal questions under international law, with proponents arguing they minimized ground troop risks while critics highlighted risks of error and radicalization.^[2] The post-9/11 framework also incorporated special operations raids, exemplified by the May 2, 2011, SEAL Team Six operation in Abbottabad, Pakistan, that killed Osama bin Laden, al-Qaeda's founder.^[2] This hybrid approach—combining drones for persistent surveillance and strikes with raids for confirmation—became standard, influencing allied practices and normalizing targeted killings in non-traditional conflicts, though empirical assessments vary on long-term efficacy in degrading terrorist networks.^[25]

Operational Methods

Intelligence Gathering and Targeting Processes

The intelligence gathering phase for targeted killings relies on the fusion of multiple intelligence disciplines, including signals intelligence (SIGINT), human intelligence (HUMINT), geospatial intelligence (GEOINT), and open-source intelligence (OSINT), to identify and track high-value targets (HVTs) such as terrorist leaders or operatives posing imminent threats.^[2] This process begins with broad surveillance and pattern-of-life analysis to nominate potential targets, followed by vetting to confirm their involvement in hostile activities and assess collateral risks.^[2] In practice, agencies prioritize targets based on their operational significance, such as leadership roles in networks like al-Qaeda, using data from captured documents, intercepted communications, and ground assets to build targeting packages.^[47] In the United States, the Joint Special Operations Command (JSOC) employs the F3EAD targeting cycle—Find, Fix, Finish, Exploit, Analyze, Disseminate—to integrate operations and intelligence for rapid HVT neutralization, a methodology developed by U.S. special operations forces (SOF) in counterterrorism campaigns post-2001.^[47] The "Find" stage involves initial detection through multi-source intelligence to nominate HVTs; "Fix" refines location via persistent surveillance, such as drone overwatch or ground teams; "Finish" executes the kill or capture, often via special forces raids or airstrikes.^[47] Subsequent phases—"Exploit" collects on-site materials like biometrics or devices, "Analyze" processes them for network insights, and "Disseminate" feeds back to refine future targeting—enable iterative disruption of adversary structures, as demonstrated in Iraq and Afghanistan where JSOC raids tripled in scale by 2011.^[47]^[2] The Central Intelligence Agency (CIA) follows a parallel but more covert process for drone-based targeted killings outside declared war zones, such as in Pakistan and Yemen, involving nomination by counterterrorism analysts to a "disposition matrix" or kill list, interagency review for threat validation, and high-level approval emphasizing positive target identification and minimized civilian exposure.^[2]^[48] Unlike JSOC's kinetic focus, CIA operations often incorporate "signature strikes" based on behavioral patterns rather than confirmed identities, though post-2013 policy shifts under President Obama required near-certainty of HVT presence and stricter collateral limits for personality strikes.^[2] Congressional briefings and White House oversight provide additional layers, with the 2001 Authorization for Use of Military Force (AUMF) serving as legal foundation for selections.^[2] Israeli targeting processes, led by entities like Mossad for HUMINT operations and Unit 8200 for SIGINT collection, emphasize preemptive identification of threats through extensive surveillance networks, including electronic intercepts and informant networks, to generate actionable targeting data.^[49] Recent integrations of AI tools, such as systems trained on mass Arabic communications data, automate target generation by scoring individuals based on associations and behaviors, though reports indicate variable error tolerances in applications like Gaza operations.^[50] These methods prioritize real-time fusion to enable precise strikes, reflecting a doctrine of proactive defense against groups like Hamas.^[49]

Conventional Special Forces Raids

Conventional special forces raids for targeted killings involve elite units conducting ground assaults on confirmed or suspected locations of high-value targets (HVTs), prioritizing direct engagement to neutralize threats while enabling intelligence exploitation and identity verification. These operations, often executed under Joint Special Operations Command (JSOC), feature small teams (typically 10-30 operators) inserted via low-observable helicopters at night, employing suppressed firearms, breaching charges, and close-quarters battle techniques to clear structures rapidly and minimize exposure.^[51]^[52] Supporting elements include aviation from the 160th Special Operations Aviation Regiment for insertion/extraction and unmanned systems for initial reconnaissance.^[51] A foundational example occurred on July 22, 2003, in Mosul, Iraq, when Task Force 20 (including Delta Force operators) and 101st Airborne Division soldiers raided a safehouse following a local tip about Saddam Hussein's sons. The four-hour engagement involved small-arms fire and TOW missile strikes after the targets refused surrender, resulting in the deaths of Uday, Qusay, their brother Mustafa, and a bodyguard; identities were verified through dental records and fingerprints.^[53]^[54] Operation Neptune Spear exemplified refined tactics on May 2, 2011, when 23 Navy SEALs from DEVGRU assaulted Osama bin Laden's compound in Abbottabad, Pakistan, based on CIA tracking of a courier. Despite a helicopter crash due to mechanical failure, operators cleared the site in under 40 minutes, killing bin Laden—who was unarmed but resisted—along with accomplices, and recovered computers, documents, and media yielding actionable intelligence on al-Qaeda networks; DNA testing confirmed the target's identity.^[55]^[56] In Operation Kayla Mueller on October 26, 2019, Delta Force assault teams supported by Rangers raided ISIS leader Abu Bakr al-Baghdadi's compound in Barisha, Syria, using helicopters and ground vehicles. Baghdadi fled into a tunnel and detonated a suicide vest, killing himself and two children; U.S. forces rescued an adult hostage, detained others, and extracted with no American casualties, with DNA and biometric confirmation of the kill.^[57]^[58] From 2003 to 2011, JSOC units like Delta Force and SEAL Team Six executed thousands of raids in Iraq and Afghanistan, often nightly during peak periods, targeting al-Qaeda, Taliban, and ISIS precursors; these disrupted operational cells by killing or capturing mid- and senior-level HVTs, though precise figures remain classified amid debates over long-term efficacy against decentralized networks.^[51]^[52] Such raids provide advantages over aerial methods, including selective engagement rules allowing capture, on-site forensic evidence gathering, and reduced collateral risk through visual target discrimination, but carry elevated operator hazards and potential for host-nation backlash, as seen in Pakistan's post-Neptune Spear diplomatic strain.^[2]^[51]

Unmanned Aerial Vehicles and Drones

Unmanned aerial vehicles (UAVs), particularly armed variants like the MQ-1 Predator and MQ-9 Reaper, have enabled targeted killings by allowing persistent surveillance and precision strikes from remote locations, minimizing risks to human operators. These platforms, equipped with AGM-114 Hellfire missiles, facilitate operations in denied areas where ground raids pose high dangers. The United States pioneered their use in counterterrorism, with the Central Intelligence Agency (CIA) and Joint Special Operations Command conducting most strikes.^[2] The first known U.S. drone strike for targeted killing occurred on November 3, 2002, in Yemen, eliminating al-Qaeda operative Qaed Salim Sinan al-Harethi and five associates via a Predator-fired Hellfire missile, authorized jointly by the CIA and Yemeni government.^[59] Subsequent expansion targeted al-Qaeda and affiliated networks in Pakistan starting June 18, 2004, with a strike on Nek Muhammad Wazir. From 2004 to 2020, approximately 430 CIA drone strikes in Pakistan killed between 2,515 and 4,026 people, including an estimated 424 to 969 civilians according to independent trackers, though U.S. assessments report lower non-combatant figures.^[60] Under President Obama, drone usage intensified, with 542 strikes authorized from 2009 to 2016 across Pakistan, Yemen, Somalia, and active battlefields, resulting in 2,372 to 2,581 reported militant deaths and 64 to 116 civilian casualties in non-battlefield settings per official summaries. The MQ-9 Reaper, introduced in 2007, enhanced capabilities with greater payload, endurance exceeding 27 hours, and speeds up to 240 knots, supporting both "personality strikes" against nominated individuals and "signature strikes" based on behavioral patterns indicative of threats.^[61]^[46] Empirical analyses indicate drone strikes disrupted terrorist leadership and reduced attack incidence in targeted areas; for instance, strikes in Pakistan correlated with decreased lethality of subsequent terrorist violence, as leadership decapitation hindered operational coordination. Captured al-Qaeda documents from Abbottabad reveal internal disruptions, including recruitment challenges and command fragmentation, attributable to U.S. drone campaigns. However, comparisons with special forces raids highlight drones' limitations in intelligence gathering, as raids enable captures yielding actionable data, whereas strikes often destroy forensic evidence and may incentivize decentralized terrorist structures.^[62]^[63] Civilian casualty estimates vary due to classification practices, where U.S. reports presume military-age males in strike zones as combatants absent contrary evidence, potentially undercounting non-combatants; independent sources like the Bureau of Investigative Journalism report higher ranges, such as 174 to 225 civilians in Yemen from 2002 to 2024. In Somalia, over 200 strikes since 2007 have targeted al-Shabaab, with similar debates over collateral effects. Post-2016, strikes continued under Presidents Trump and Biden, shifting emphasis to Africa and the Middle East, with annual figures declining in Pakistan but persisting elsewhere for high-value targets.^[64] Other states, including Israel, have employed drones for targeted killings, such as against Hamas leaders in Gaza using Heron and Hermes UAVs, demonstrating the technology's proliferation for precision operations. While tactically effective in eliminating threats without deploying ground forces, long-term strategic impacts remain contested, with some evidence of localized deterrence against militants but potential for backlash in affected populations.

Emerging Technologies

Advancements in artificial intelligence (AI) are increasingly integrated into targeting processes for lethal operations, enabling automated identification and prioritization of individuals based on data from surveillance feeds, social media, and behavioral patterns. In the Israel Defense Forces' operations during the 2023-2024 Gaza conflict, AI systems such as "Lavender" reportedly generated lists of approximately 37,000 potential Hamas operatives by cross-referencing vast datasets, with human operators required to confirm strikes but often accepting error rates that permitted up to 10% false positives for low-level targets and 15-20 civilian deaths per junior militant killed. Similarly, the "Gospel" system automated building targeting, processing intelligence to suggest structures housing suspected militants, though investigations highlighted risks of algorithmic bias and insufficient human oversight in high-volume warfare environments. These applications demonstrate AI's role in scaling targeted killing amid information overload, but critics, including UN experts, argue they erode accountability by diffusing responsibility across machine-generated recommendations and rushed approvals.^[65]^[66]^[67] Lethal autonomous weapon systems (LAWS), capable of selecting and engaging human targets without real-time human intervention, represent a shift toward fully independent killing platforms, often termed "killer robots." Defined by the International Committee of the Red Cross as weapons that interpret sensory data to apply force autonomously, LAWS include loitering munitions like Iran's Shahed-136 drone, which uses pre-programmed algorithms to identify and strike predefined target profiles in contested areas. As of 2022, U.S. intelligence assessments noted AI enhancements could enable drones to execute targeted killings by distinguishing combatants via facial recognition or gait analysis, potentially reducing operator workload but raising concerns over unpredictable behavior in dynamic environments. Diplomatic efforts, including UN discussions through 2025, have failed to yield a binding treaty banning LAWS, with proponents citing force multiplication benefits—such as fewer personnel exposed to risk—while opponents emphasize violations of distinction principles under international humanitarian law due to machines' inability to assess proportionality or surrender.^[68]^[69]^[70]^[71] Cyber capabilities for targeted killing remain largely theoretical but pose risks through remote manipulation of connected devices, such as hacking insulin pumps or vehicle systems to induce fatal failures. No confirmed state-sponsored cyber assassinations have been publicly verified as of 2025, though hypothetical scenarios outlined in security analyses include disrupting life-sustaining medical implants or autonomous vehicles to mimic accidents, evading traditional attribution challenges. U.S. Department of Homeland Security reports highlight dual-use potential, where offensive cyber tools could enable deniable, precise eliminations, but empirical evidence is scarce, limited to non-lethal disruptions like the 2020 SolarWinds hack or Iranian responses to U.S. actions. Such methods underscore causal vulnerabilities in an IoT-dependent world, yet their deployment in targeted killing would likely contravene customary international norms prohibiting perfidy, with detection reliant on forensic digital trails rather than kinetic signatures.^[72]^[73]

Legal Frameworks

Under International Humanitarian Law

International Humanitarian Law (IHL), also known as the law of armed conflict, permits the targeting of individuals who qualify as lawful military objectives during situations of armed conflict, provided such actions adhere to fundamental principles including distinction, proportionality, and military necessity.^[1] Targeted killing, defined as the intentional, premeditated use of lethal force by states or organized armed groups against specific individuals who are not in physical custody, is not inherently prohibited under IHL when directed at such objectives; it constitutes a lawful attack rather than an assassination, which is generally barred against protected persons.^[1]^[8] This framework derives from the Geneva Conventions of 1949 and their Additional Protocols, which regulate the conduct of hostilities without explicitly addressing "targeted killing" but establishing criteria for permissible uses of force.^[74] The applicability of IHL to targeted killings hinges on the existence of an armed conflict, either international (involving states) or non-international (typically between a state and non-state armed groups or between such groups). In international armed conflicts, members of enemy armed forces who qualify as combatants—those belonging to the armed forces of a party to the conflict and subject to an internal disciplinary system enforcing compliance with IHL—may be targeted at any time, regardless of direct participation in specific hostilities, until they surrender or are hors de combat.^[75] Civilians lose this protection temporarily if they directly participate in hostilities (DPH), meaning they engage in acts that directly cause harm to personnel or objects protected under IHL, such as firing weapons or planning attacks, with the intent to do so.^[76] The International Committee of the Red Cross (ICRC) Interpretive Guidance on DPH clarifies that such participation must meet thresholds of threshold of harm, direct causation, and belligerent nexus, excluding preparatory or supportive acts unless they inherently involve the deployment of threshold-level force.^[76] In non-international armed conflicts, IHL under Common Article 3 of the Geneva Conventions and Additional Protocol II extends protections to civilians unless they are members of an organized armed group performing a continuous combat function (CCF), which involves sustained, direct participation in hostilities as part of the group's structure, rendering them targetable throughout their membership in that role.^[77] The Israeli High Court of Justice, in its 2006 ruling on the state's targeted killing policy against Palestinian militants, affirmed that such operations are lawful under IHL if intelligence reliably identifies the target as participating in hostilities, the anticipated civilian harm does not outweigh the military advantage (proportionality), and feasible precautions are taken to minimize incidental damage.^[78]^[10] However, targeting protected civilians not meeting DPH or CCF criteria, or failing to verify targets post-intelligence assessment, violates IHL's prohibition on arbitrary deprivation of life and may amount to a war crime.^[8]^[77] States conducting targeted killings bear the burden of ensuring compliance with IHL's core principles: distinction requires separating combatants or DPH from civilians; proportionality assesses whether expected civilian casualties are excessive relative to concrete military gain; and precautions mandate verifying targets, choosing means minimizing harm, and issuing warnings when feasible.^[10] Empirical assessments, such as those in U.S. drone operations against al-Qaeda affiliates, have tested these limits, with legal analyses concluding that strikes on high-value targets in NIACs can be lawful if targets maintain CCF and operations occur in conflict zones, though extraterritorial application remains contested absent state consent or UN authorization.^[5]^[79] Customary IHL, binding on all parties, reinforces that hors de combat individuals—wounded, surrendering, or captured—cannot be targeted, underscoring IHL's aim to limit suffering while permitting necessary force against threats.^[80] Violations, including indiscriminate targeting, trigger individual criminal responsibility under statutes like the Rome Statute of the International Criminal Court for willful killing as a war crime.^[77]

Human Rights Law Challenges

Targeted killings by states, particularly through drone strikes or special operations outside declared armed conflicts, pose significant challenges to the right to life enshrined in Article 6 of the International Covenant on Civil and Political Rights (ICCPR), which prohibits arbitrary deprivation of life.^[81] Under human rights law, lethal force must adhere to law enforcement standards requiring it to be strictly necessary and proportionate to an imminent threat, with capture feasible where possible, rather than anticipatory elimination based on suspected future conduct.^[82] This framework contrasts with international humanitarian law's permissions for targeting combatants in active hostilities, leading to disputes over when human rights protections govern, especially in extraterritorial operations where states exercise effective control or jurisdiction.^[83] United Nations Special Rapporteurs on extrajudicial, summary, or arbitrary executions have repeatedly critiqued targeted killing policies for constituting arbitrary executions absent judicial process or verifiable imminent threats. In a 2010 study, former Rapporteur Philip Alston defined targeted killings as intentional lethal operations against specific individuals not in custody, arguing they often bypass due process and risk erroneous targeting based on intelligence of variable reliability.^[84] Alston's analysis highlighted U.S. drone strikes in Pakistan, Yemen, and Somalia from 2004 onward, where over 2,500 strikes by 2010 reportedly killed hundreds of civilians alongside targets, violating ICCPR obligations to investigate and minimize such harm.^[85] Similarly, Rapporteur Agnes Callamard's 2020 report on armed drones emphasized proliferation risks, noting that between 2010 and 2020, non-state actors and states like Turkey and Saudi Arabia adopted similar tactics, often without transparency on targeting criteria or post-strike accountability, exacerbating arbitrary deprivation claims.^[86] Challenges extend to procedural safeguards, as targeted killings preclude fair trial rights under ICCPR Article 14 for those labeled threats, treating suspicion as sufficient for execution without appeal or evidence presentation.^[87] Human rights bodies, including the UN Human Rights Committee, have interpreted the right to life as requiring states to ensure no deprivation occurs without strict legal authorization, a standard unmet in remote or cross-border operations reliant on executive determinations rather than judicial warrants.^[16] For instance, in contexts like Israel's operations in the West Bank—deemed non-international armed conflict by some but law enforcement zones by others—extraterritorial application of the European Convention on Human Rights has been invoked in analogous cases, underscoring tensions between self-defense claims and the presumption against summary executions.^[10] These critiques persist despite state arguments invoking Article 51 UN Charter self-defense, as Rapporteurs maintain human rights law demands individualized assessments of necessity over generalized threat profiles.^[88] Empirical data on civilian casualties further underscores accountability gaps, with Bureau of Investigative Journalism estimates indicating U.S. strikes from 2004 to 2020 caused 910 to 2,200 civilian deaths across multiple countries, often without reparations or independent probes required under human rights treaties.^[86] While states like the U.S. assert compliance through internal reviews, such as the 2013 Presidential Policy Guidance limiting strikes to high-value targets with near-certainty of no civilian presence, UN experts argue these fall short of impartial judicial oversight, perpetuating impunity for potential violations.^[85] Proponents of targeted killing counter that real-time threats in ungoverned spaces necessitate exceptions, yet human rights law's non-derogable core resists such dilutions, prioritizing empirical verification of threats over predictive models prone to bias or error.^[89]

National and Domestic Authorizations

In the United States, the primary national authorization for targeted killings derives from the Authorization for Use of Military Force (AUMF), enacted by Congress on September 18, 2001, which empowers the President to employ "all necessary and appropriate force" against those determined to have planned, authorized, committed, or aided the September 11, 2001, terrorist attacks, or who harbored such actors, including al-Qaeda and affiliated groups. This statute has served as the domestic legal foundation for executive-directed targeted operations, such as drone strikes, by framing them as acts of national self-defense within an ongoing armed conflict rather than assassinations prohibited under Executive Order 12333.^[2] The Department of Justice's 2010 and 2014 legal analyses further justified such actions against imminent threats, including U.S. citizens like Anwar al-Awlaki, by invoking the President's Article II powers and the absence of feasible capture alternatives, provided the target poses a "continued and imminent threat" to U.S. persons.^[90] Domestically, however, targeted killings remain constrained; military operations on U.S. soil are generally precluded by the Posse Comitatus Act of 1878, shifting such responsibilities to law enforcement under Title 18 U.S. Code provisions for lethal force in self-defense or apprehension, though preemptive targeting lacks explicit statutory endorsement and relies on case-specific judicial review, as in Hamdi v. Rumsfeld (2004), which affirmed enemy combatant targeting but emphasized due process limits. Israel provides a prominent example of judicially sanctioned national authorization for targeted killings, codified through the High Court of Justice's 2006 ruling in Public Committee Against Torture in Israel v. Government of Israel, which deemed the practice permissible as a defensive measure during armed conflict against terrorists actively planning or executing attacks, subject to proportionality, advance intelligence verification of combatant status, and post-operation review to minimize civilian harm.^[10] The court's decision distinguished targeted killing from extrajudicial execution by requiring it occur in contexts akin to hostilities, such as against Palestinian militants in the West Bank and Gaza, and mandated governmental oversight without explicit legislative statute, relying instead on the state's inherent right to self-defense under domestic security doctrines.^[78] This framework has been applied domestically and extraterritorially, with over 2,300 such operations reported by Israeli forces from 2000 to 2011, though critics note the absence of statutory caps leads to expansive executive discretion. Other nations, including Russia and several African states confronting insurgencies, conduct targeted killings under broad anti-terrorism statutes or executive decrees, but explicit domestic authorizations are rare and often opaque; for instance, Nigeria's military has invoked emergency powers under the 2013 Terrorism (Prevention) Act for operations against Boko Haram, yet lacks judicial precedents akin to Israel's for proportionality assessments. In the United Kingdom, targeted killings abroad draw from the 2001 AUMF equivalent via parliamentary resolutions post-9/11 and the Human Rights Act 1998's deference to national security, but domestic applications are limited to police shoot-to-kill policies, as in the 2005 London bombings response, without formal "targeted killing" protocols.^[2] These authorizations generally prioritize empirical threat assessments over peacetime due process, reflecting a causal prioritization of disrupting operational terrorist networks, though source analyses from think tanks like RAND highlight risks of overreliance on executive interpretations without legislative reforms.^[25]

International Custom and State Practice

State practice on targeted killing varies significantly, with several states employing it primarily against non-state actors perceived as threats in contexts outside traditional interstate armed conflicts. The United States has conducted extensive targeted killings since 2001, authorizing over 500 drone strikes in Pakistan, Yemen, and Somalia by 2019, often justified under domestic law like the Authorization for Use of Military Force and claims of self-defense against al-Qaeda affiliates.^[91] Israel formalized a targeted killing policy in the early 2000s, executing operations against Palestinian militants, as affirmed in the Israeli Supreme Court's 2006 Public Committee Against Torture ruling, which permitted such actions against combatants in non-international armed conflicts subject to proportionality constraints.^[78] Other states, including Russia, have engaged in targeted operations, such as reported assassination plots against arms suppliers in 2024 and strikes against Ukrainian figures, framing them as countermeasures in ongoing hostilities.^[92] A broader survey reveals that at least a dozen countries, including Colombia, Nigeria, and Turkey, have practiced targeted killings against insurgent leaders, often in domestic non-international armed conflicts where international humanitarian law principles of distinction and proportionality apply, though documentation remains inconsistent and many operations are covert or denied.^[5] However, extraterritorial targeted killings, such as those by the United States in sovereign territories without host state consent, have elicited formal protests from affected nations; Pakistan issued over 30 diplomatic objections to U.S. strikes between 2004 and 2013, citing sovereignty violations despite occasional tacit cooperation.^[11] Similarly, Yemen and Somalia governments have alternated between condemnation and endorsement, reflecting pragmatic alliances rather than unqualified acceptance.^[93] Regarding customary international law, targeted killing does not evince a general practice accepted as legally obligatory (opinio juris) permitting its use in peacetime or outside recognized armed conflicts. While states like the United States and Israel assert its lawfulness under self-defense provisions of Article 51 of the UN Charter, widespread state objections—evident in UN General Assembly debates and regional forums—demonstrate a lack of acquiescence, precluding the emergence of permissive custom.^[94] UN Special Rapporteur reports, including Philip Alston's 2010 analysis and Ben Emmerson's 2013 inquiry, highlight divergent views, with many states and experts maintaining that peacetime targeted killings revert to a law enforcement paradigm prohibiting lethal force absent imminent threat and due process, rather than forming a novel customary norm.^[95] Nils Melzer's examination concludes that insufficient consistent practice and opinio juris exist to override traditional prohibitions on assassination under customary human rights and humanitarian law, particularly for operations infringing territorial sovereignty.^[96] In armed conflict settings, state practice aligns more closely with customary international humanitarian law permitting the targeting of military objectives, including high-value individuals, as evidenced by operations in Iraq, Afghanistan, and Syria by coalition forces.^[16] Yet, even here, empirical data from U.S. programs indicate frequent civilian casualties—estimated at 10-20% of drone strike fatalities in Pakistan from 2004-2013—prompting critiques that such outcomes undermine claims of discriminatory targeting and may erode broader acceptance of the practice as customary.^[97] Overall, the fragmented nature of state practice, coupled with persistent legal contestation, suggests targeted killing remains governed by treaty law and contextual jus ad bellum/jus in bello rules rather than a unified customary framework.^[98]

Ethical and Strategic Rationales

Defensive Necessity and Self-Defense Claims

Targeted killings are frequently justified by states as legitimate acts of self-defense under Article 51 of the United Nations Charter, which preserves the inherent right of individual or collective self-defense in response to an armed attack until the Security Council takes measures to maintain international peace. This invocation extends to anticipatory self-defense against imminent threats posed by non-state actors, such as terrorist organizations, where traditional capture operations are deemed infeasible due to hostile environments or the target's operational context.^[99] Proponents argue that defensive necessity arises from the asymmetric nature of modern threats, where militants embed within civilian populations and exploit sovereignty gaps, rendering targeted elimination a proportionate response to neutralize ongoing plots without broader military invasion.^[100] In the United States, the executive branch has consistently framed targeted killings—particularly drone strikes against al-Qaeda leaders—as exercises of self-defense authorized by Congress following the September 11, 2001, attacks, which constituted an armed attack triggering Article 51 rights.^[14] For instance, the 2011 operation killing Osama bin Laden was justified as necessary to disrupt al-Qaeda's command structure and prevent future attacks, with legal memos emphasizing the target's continuing involvement in planning operations against U.S. interests.^[16] Similarly, the 2020 airstrike on Iranian General Qasem Soleimani was notified to the UN under Article 51 as a defensive measure against imminent threats to U.S. personnel, citing his role in orchestrating attacks via proxy militias.^[101] U.S. officials maintain that such actions adhere to principles of necessity, where alternatives like arrest are unavailable amid active hostilities.^[102] Israel has employed targeted killings since the 1970s, escalating during the Second Intifada (2000–2005), as a core element of self-defense against Palestinian militant groups like Hamas and Islamic Jihad, which launch cross-border attacks.^[99] The Israeli Supreme Court in Public Committee Against Torture in Israel v. Government of Israel (2006) ruled that such operations are permissible under international law when the target is a combatant actively participating in hostilities and poses an imminent threat, with no feasible non-lethal alternatives, framing them as a "localized military operation" akin to self-defense rather than assassination.^[78] This doctrine emphasizes empirical assessments of threat levels, such as intelligence on planned suicide bombings, to establish necessity, distinguishing targeted strikes from punitive or extrajudicial killings.^[103] Other states, including Russia in its operations against Chechen separatists and alleged Wagner Group defectors, have invoked analogous self-defense rationales, though less formally tied to Article 51, prioritizing national security imperatives against internal-external hybrid threats.^[98] Critics from human rights organizations contend these claims stretch self-defense doctrines beyond traditional state-on-state armed attacks, potentially eroding UN Charter constraints, yet state practice indicates a customary acceptance for counterterrorism contexts where threats are verifiable and persistent.^[11] Empirical data on disrupted plots, such as Israel's preemption of over 50 suicide attacks via targeted operations in the early 2000s, bolsters defensive necessity arguments by demonstrating causal links between eliminations and reduced attack frequencies.^[99]

Proportionality and Discriminatory Targeting

In the context of targeted killings, the principle of distinction—requiring attacks to differentiate between combatants and civilians—underpins discriminatory targeting by prioritizing intelligence-verified high-value individuals actively engaged in hostilities, such as terrorist leaders directing operations.^[104] Advanced surveillance from unmanned aerial vehicles enables real-time behavioral analysis to confirm combatant status, reducing reliance on proximity-based assumptions common in conventional warfare.^[105] Proponents, including U.S. military assessments, argue this approach yields higher accuracy, with Pakistani military intelligence estimating civilian deaths in Federally Administered Tribal Areas strikes at under 3% of totals from 2004 to 2011, far below disputed NGO figures.^[105] Proportionality evaluates whether anticipated incidental civilian harm is excessive relative to concrete military advantage, such as decapitating command structures to avert large-scale attacks.^[106] In targeted killings, precision munitions and loitering capabilities allow strikes on isolated targets, obviating broader operations like ground raids or airstrikes that historically incur higher collateral damage; for instance, U.S. analyses indicate drone strikes in counterterrorism contexts produce fewer civilian deaths per militant neutralized than alternatives involving troop deployments. President Barack Obama's 2013 policy directive mandated "near certainty" of zero civilian casualties for strikes outside active battlefields, reflecting a calculated balance where eliminating figures like Anwar al-Awlaki in 2011 disrupted al-Qaeda in the Arabian Peninsula plots without equivalent risks to U.S. forces or locals from invasion-scale responses.^[107] Empirical reviews by defense experts affirm that such operations, when intelligence-led, align with IHL by yielding advantages like network fragmentation at lower human cost than indiscriminate bombing campaigns seen in prior conflicts. Strategically, discriminatory targeting via targeted killings enhances overall proportionality by enabling sustained pressure on non-state actors without escalating to full-scale wars that amplify civilian exposure; data from Yemen and Pakistan suggest militant leadership losses correlate with temporary operational pauses, justifying the method's restraint relative to unchecked insurgent growth.^[105] This rationale holds despite source variances—government reports emphasize minimized harm, while some academic critiques inflate civilian tallies based on local media, underscoring the need for verified intelligence over unconfirmed aggregates. Ultimately, the ethical case rests on causal evidence that precision disrupts threats efficiently, preserving distinction and proportionality where alternatives like regime change have yielded disproportionate fallout, as in Iraq post-2003.^[106]

Empirical Effectiveness in Disrupting Threats

Empirical assessments of targeted killings' effectiveness in disrupting terrorist threats draw primarily from quantitative analyses of leadership decapitation and operational data on militant attacks. Studies indicate that such operations can yield short-term tactical disruptions, including reduced attack frequency and degraded command structures, particularly against hierarchical or smaller groups. For instance, a comprehensive dataset analysis of 207 terrorist organizations from 1945 to 2007 found that decapitation strikes contribute to group dissolution in approximately 30% of cases overall, rising to over 50% for groups less than 25 years old and under 500 members, as leadership loss hampers coordination and recruitment without rapid succession mechanisms.^[108] However, effectiveness diminishes against older, larger, or ideologically driven groups with networked structures, where replacements often emerge, sustaining long-term resilience.^[109] In Israel's campaign during the Second Intifada (2000–2005), targeted killings of Palestinian militants correlated with a 45–70% drop in suicide bombings in the immediate aftermath of high-profile operations, as measured by event data from Israeli security sources and cross-verified against attack logs. Indirect evidence from Tel Aviv stock market reactions—positive abnormal returns of 0.44% on assassination announcement days—further suggests investor and public perceptions of enhanced security and disrupted planning cycles.^[110]^[111] Similarly, U.S. drone strikes in Pakistan's Federally Administered Tribal Areas (2004–2018) against al-Qaeda and Tehrik-i-Taliban Pakistan (TTP) leaders were associated with a 10–20% reduction in the incidence and lethality of terrorist attacks in targeted districts, based on geospatial regressions of strike locations against the Global Terrorism Database. Captured al-Qaeda documents from Abbottabad raids corroborate this, revealing internal admissions of operational paralysis, such as delayed plots and fractured communications following strikes on figures like Baitullah Mehsud in 2009.^[62]^[63] Notwithstanding these disruptions, broader strategic impacts remain contested, with evidence of adaptation mitigating long-term gains. Al-Qaeda's core persisted post-Osama bin Laden's 2011 killing, splintering into resilient affiliates like AQAP, which sustained plots despite over 400 U.S. strikes in Yemen by 2020. Factors such as organizational ideology—religious groups showing 89% survival rates post-decapitation versus 42% for secular ones—and external safe havens enable regeneration, as seen in TTP's rebound after initial strike-induced setbacks.^[112] RAND analyses of insurgencies echo this, noting decapitation's utility in fluid environments but limited standalone efficacy without complementary ground operations or governance reforms.^[113] Thus, while targeted killings demonstrably interrupt immediate threats, empirical data underscores their role as a disruptive tool rather than a decisive endpoint for ideologically entrenched networks.

Criticisms and Counterarguments

Collateral Damage and Civilian Risks

Targeted killings, often executed through precision-guided munitions or drone strikes, pose risks of collateral damage to non-combatants arising from intelligence inaccuracies, militants embedding in civilian areas, and the kinetic effects of weaponry in proximity to populated zones. These risks are amplified in urban or rural settings where targets may reside among family or community members, potentially leading to unintended fatalities during operations. Despite advancements in surveillance and targeting technology, empirical assessments reveal persistent challenges in fully mitigating civilian exposure.^[114] In United States counterterrorism operations, data from non-governmental trackers indicate civilian casualty rates in drone strikes ranging from low single digits to around 10 percent of total deaths. For example, in Yemen, strikes from the program's inception through 2016 killed 531 to 779 individuals, with civilians comprising 4 to 8.5 percent according to the New America Foundation's methodology, which cross-references media reports and official statements while conservatively classifying disputed cases.^[64] In Pakistan, analyses of strikes between 2010 and 2012 reported civilian deaths at approximately 3 percent of fatalities, based on counts from the Long War Journal database.^[115] U.S. Department of Defense reports for later years, such as 2021, document minimal confirmed civilian casualties from assessed strikes, attributing reductions to enhanced protocols like elevated scrutiny for positive identification.^[116] Comparisons with conventional warfare underscore the relative restraint of targeted approaches; historical conflicts like World War II saw civilian-to-combatant death ratios exceeding 50 percent in aerial campaigns, whereas precision strikes in post-9/11 operations maintain ratios often below 1:10.^[105] Discrepancies in casualty estimates persist across sources, with governmental assessments typically lower than those from advocacy groups or local media, reflecting variances in verification access, classification of militants' associates as civilians, and potential underreporting due to operational secrecy.^[117] These variances highlight methodological biases, as outlets with limited on-ground presence may inflate figures based on unverified claims from affected communities sympathetic to targeted groups. Israeli targeted killings, primarily against militants in Gaza and the West Bank, encounter heightened civilian risks due to high population densities and frequent use of human shields, as documented in operations where collateral deaths occurred despite efforts to time strikes for minimal presence. Empirical evaluations of these programs report occasional bystander fatalities, though aggregate data suggest lower per-operation civilian impact compared to broader military engagements, with precision mitigating but not eliminating urban warfare hazards.^[118] Overall, while targeted killing reduces aggregate civilian harm relative to indiscriminate alternatives, isolated incidents underscore ongoing vulnerabilities to error and environmental constraints.

Potential for Escalation and Radicalization

Targeted killings have been criticized for their capacity to escalate conflicts through retaliatory cycles, as demonstrated by the U.S. drone strike on Iranian General Qasem Soleimani on January 3, 2020, near Baghdad International Airport, which prompted Iran to launch over a dozen ballistic missiles at U.S. bases in Iraq on January 8, 2020, injuring more than 100 American service members.^[119]^[120] This incident heightened U.S.-Iran tensions, with Iranian officials vowing further retribution and proxy militias increasing attacks on U.S. assets in the region, though it stopped short of full-scale war due to mutual deterrence.^[121] Similar patterns appear in analyses of Israeli operations during the Second Intifada (2000–2005), where targeted assassinations of Palestinian militants correlated with short-term spikes in suicide bombings and other attacks, suggesting a tit-for-tat dynamic that prolonged violence despite long-term disruptions to terrorist networks.^[122] Beyond immediate retaliation, such operations may foster broader escalation by decentralizing terrorist groups, enabling more autonomous cells to pursue aggressive reprisals without centralized restraint. Empirical assessments of U.S. drone campaigns indicate that leadership decapitation can temporarily reduce operational capacity but often leads to successor leaders adopting more radical tactics to assert legitimacy, as seen in Al Qaeda in the Arabian Peninsula (AQAP) following strikes in Yemen, where fragmented command structures sustained recruitment and attacks.^[123] Studies on decapitation strategies highlight that while effective against hierarchical organizations, they risk empowering ideologically extreme deputies in diffuse networks like ISIS or Al Qaeda affiliates, potentially amplifying violence as groups compete for relevance through high-profile reprisals.^[124] Critics further contend that targeted killings contribute to radicalization by generating resentment and propaganda fodder for terrorist narratives, portraying victims as martyrs and foreign powers as aggressors. In Pakistan's tribal areas, persistent U.S. drone surveillance and strikes from 2004 onward created widespread civilian fear of constant monitoring, eroding local support for counterterrorism efforts and correlating with heightened anti-U.S. sentiment that bolstered Taliban and Al Qaeda recruitment.^[125]^[126] This "hearts and minds" backlash is evidenced in surveys and interviews from strike zones, where perceived impunity and collateral effects—though minimized by proponents—fueled narratives of martyrdom, drawing in sympathizers motivated by vengeance rather than ideology alone.^[127] However, quantitative data on recruitment remains contested, with some analyses finding no net increase in terrorist attacks post-decapitation, underscoring that radicalization effects depend on group structure and local grievances.^[128]^[129]

Sovereignty and Extraterritorial Concerns

Targeted killings conducted extraterritorially, particularly via drone strikes or special operations in non-consenting states, frequently raise concerns under Article 2(4) of the UN Charter, which prohibits the threat or use of force against the territorial integrity or political independence of any state.^[130] Critics argue that such operations, even when justified under Article 51's self-defense provisions, infringe on sovereign equality by bypassing host government authority and potentially destabilizing bilateral relations.^[11] Proponents counter that the "unwilling or unable" doctrine permits intervention when host states fail to address imminent threats, though this remains contested in customary international law absent explicit Security Council authorization.^[91] In Pakistan, U.S. drone strikes targeting militants in the Federally Administered Tribal Areas exemplified these tensions, with over 400 strikes reported between 2004 and 2018, many conducted without formal Pakistani consent despite intermittent intelligence-sharing agreements.^[131] Pakistan's government repeatedly protested these actions as sovereignty violations, including a 2016 drone strike killing Taliban leader Mullah Mansour, which prompted official condemnation and demands for cessation.^[132] The Peshawar High Court ruled in 2013 that such strikes breached national sovereignty and international law, ordering the government to halt them or seek reparations, though enforcement lagged amid tacit U.S.-Pakistani counterterrorism cooperation.^[133] A UN special rapporteur similarly concluded in 2013 that the strikes undermined Pakistan's sovereignty and disrupted tribal governance structures.^[131] Israeli operations abroad, such as airstrikes on Iranian-linked targets in Syria since 2013, have elicited sovereignty objections from host states, with Syria filing multiple UN complaints alleging over 200 violations of its airspace and territory by 2020.^[134] These actions, often framed as preemptive self-defense against Hezbollah armament, parallel U.S. practices but occur in active conflict zones, complicating consent claims; Damascus has denied permission, invoking territorial integrity under international law.^[10] Attributed assassinations of Iranian nuclear scientists, like Mohsen Fakhrizadeh in 2020 within Iran, further highlight extraterritorial risks, as Iran accused Israel of breaching its sovereignty without evidence of host complicity, straining regional diplomacy.^[135] Broader implications include erosion of state consent norms, potentially normalizing cross-border force and inviting reciprocity, as seen in Russian strikes in Syria or Iranian proxy actions.^[9] Empirical data from U.S. programs indicate that while strikes disrupted networks, they correlated with diplomatic frictions, such as Pakistan's 2011 suspension of NATO supply routes post-Rahman strike.^[136] Legal scholars note that without robust multilateral frameworks, these practices challenge the post-WWII order prioritizing sovereignty over unilateral extraterritoriality.^[91]

Applications by State Actors

United States Programs

![Reaper UAV Takes to the Skies of Southern Afghanistan MOD 45151418.jpg][float-right] The United States conducts targeted killings primarily against leaders and operatives of terrorist organizations such as al-Qaeda, the Taliban, and ISIS, authorized under the 2001 Authorization for Use of Military Force (AUMF), which permits military action against those responsible for the September 11 attacks and associated forces. This framework, supplemented by Office of Legal Counsel (OLC) memos, justifies lethal action against imminent threats, including U.S. citizens, without traditional capture options when feasible.^[90] Operations occur in non-battlefield settings like Pakistan, Yemen, and Somalia, as well as active theaters such as Afghanistan and Iraq, emphasizing precision to minimize collateral damage under international humanitarian law principles of distinction and proportionality.^[2] Primary agencies include the Central Intelligence Agency (CIA) for covert drone strikes using platforms like the MQ-9 Reaper and Joint Special Operations Command (JSOC) for direct action raids or Hellfire missile strikes.^[137] The CIA's program, initiated in the early 2000s, relies on signature strikes based on behavioral patterns in addition to high-value individual targeting, while JSOC focuses on intelligence-driven captures or kills.^[21] These methods evolved from post-9/11 counterterrorism needs, prioritizing remote operations to avoid risking U.S. personnel.^[138] Under President George W. Bush, the program began with the first acknowledged drone strike on January 3, 2002, in Yemen targeting al-Qaeda operative Qaed Salim Sinan al-Harethi using a CIA-operated Hellfire missile.^[2] Early efforts focused on Afghanistan and limited extraterritorial strikes, with JSOC expanding special operations against high-value targets (HVTs) like Taliban leaders.^[139] The Barack Obama administration significantly expanded the program, conducting over 540 drone strikes in Pakistan, Yemen, and Somalia from 2009 to 2016, according to official estimates, killing between 2,500 and 4,000 individuals, predominantly claimed as militants.^[60] Obama introduced stricter targeting criteria but authorized "signature strikes" and the killing of U.S. citizen Anwar al-Awlaki in Yemen on September 30, 2011, citing his operational role in al-Qaeda in the Arabian Peninsula (AQAP).^[140] Declassified data reported 64-116 civilian deaths in non-battlefield strikes from 2009-2015, though independent trackers like the Bureau of Investigative Journalism estimated higher figures, up to 800-1,200 civilians.^[141] President Donald Trump relaxed Obama-era restrictions in 2017, delegating strike authority to field commanders and increasing operations, with at least 2,243 strikes in Somalia alone from 2017 to 2020 per U.S. Africa Command reports.^[2] Notable actions included the January 3, 2020, drone strike killing Iranian Quds Force commander Qasem Soleimani at Baghdad International Airport, justified as preventing imminent attacks on U.S. personnel.^[142] The administration emphasized rapid response over bureaucratic review, leading to higher strike volumes but also incidents like the 2019 Baghouz airstrike in Syria with significant civilian casualties.^[98] Under President Joe Biden, the policy shifted toward "over-the-horizon" capabilities post-2021 Afghanistan withdrawal, with strikes requiring White House approval for non-battlefield areas.^[2] A key operation was the July 31, 2022, drone strike in Kabul eliminating al-Qaeda leader Ayman al-Zawahiri.^[143] From 2021 to mid-2025, strikes continued against ISIS remnants in Syria and Iraq, with U.S. Central Command reporting 15 strikes in 2023-2024 targeting HVTs, reflecting a reduced but persistent tempo amid evolving threats.^[138] ![Graph of Average Casualties in US Drone Strikes in Yemen 2002-present.png][center] Key operations underscore the program's focus on disrupting command structures: the May 2, 2011, JSOC raid in Abbottabad, Pakistan, killing Osama bin Laden; al-Awlaki's elimination disrupting AQAP plotting; and Soleimani's death aimed at curbing Iranian proxy attacks, which U.S. officials credited with temporary reductions in militia assaults on American forces.^[2]^[144] Effectiveness data remains contested, with government assessments claiming high success in preventing plots, while critics cite potential radicalization from strikes.^[25]

Israeli Operations

Israel has conducted targeted killings against militants from groups such as Hamas, Palestinian Islamic Jihad, and Hezbollah, viewing them as combatants actively planning attacks on Israeli civilians and forces, with operations authorized under a policy emphasizing preemption when arrest is infeasible.^[110] These actions, often executed via precision-guided munitions from aircraft or drones, escalated during the Second Intifada from September 2000, resulting in approximately 250-300 attempts, of which about 60% succeeded in eliminating the primary target.^[122] Empirical assessments indicate these strikes correlated with a short-term decline in Palestinian suicide bombings, reducing monthly incidents by an estimated 25-50% in the immediate aftermath, though groups adapted by promoting replacements and sometimes accelerating attacks in retaliation.^[110]^[111] A landmark early case in the modern era was the March 22, 2004, airstrike in Gaza City that killed Hamas founder Sheikh Ahmed Yassin, paralyzed and wheelchair-bound, as he departed a mosque; the Israel Defense Forces (IDF) cited his role in orchestrating attacks, including the deaths of over 100 Israelis.^[145] Yassin's elimination temporarily disrupted Hamas operations but prompted vows of intensified resistance from the group. Subsequent operations targeted mid-level operatives and bomb-makers, such as the 1996 killing of Yahya Ayyash, a Hamas explosives expert responsible for multiple bus bombings that killed dozens.^[110] In the post-2005 period, Israel extended operations extraterritorially, including against Hezbollah leaders in Lebanon and Syria. On September 27, 2024, an IDF airstrike demolished Hezbollah's underground headquarters in Beirut's Dahiyeh suburb, killing secretary-general Hassan Nasrallah, who had directed rocket barrages into northern Israel displacing over 60,000 residents since October 2023; the strike also eliminated several senior commanders, leveraging precise intelligence on their locations.^[146] Earlier, on July 30, 2024, Fuad Shukr, Hezbollah's top military commander blamed for a 1980s bombing in Argentina and recent strikes, was killed in a Beirut airstrike that caused minimal reported civilian casualties.^[147] These actions formed part of a broader campaign following Hezbollah's involvement in the October 7, 2023, Hamas attacks, which killed 1,200 Israelis and sparked the Gaza war. Against Hamas leadership, Israel attributed the July 31, 2024, killing of political chief Ismail Haniyeh via explosive device in Tehran to its Mossad intelligence agency, targeting him for negotiating hostage deals while endorsing the October 7 assault.^[148] On October 16, 2024, IDF forces in Rafah, Gaza, eliminated Yahya Sinwar, Hamas's Gaza operations head and architect of the October 7 attacks, in close-quarters combat using a tank shell and drone surveillance, confirming his death via DNA and facial recognition; the operation yielded weapons caches but no immediate hostages.^[149] By late 2024, Israel had killed over a dozen senior Hamas and Hezbollah figures, disrupting command structures but facing criticism for potential escalatory effects amid ongoing conflicts.^[150] Data from the period suggest such decapitation strategies degrade operational tempo temporarily, with Hezbollah rocket fire dropping post-Nasrallah, though long-term deterrence remains contested due to recruitment surges.^[146]^[122]

Russian Federation Actions

The Russian Federation has been implicated in numerous targeted killings, primarily conducted by its intelligence agencies, the Federal Security Service (FSB) and Main Intelligence Directorate (GRU), often using covert methods such as chemical poisons to eliminate defectors, critics, and perceived threats abroad and domestically.^[151]^[152] These operations, frequently denied by Moscow, have been attributed to state direction through independent inquiries and court rulings, contrasting with Russia's official stance framing such actions as rogue or fabricated by adversaries. GRU Unit 29155, a specialized sabotage and assassination subunit, has been linked to several high-profile cases, including subversion and elimination of targets in Europe.^[153]^[154] A prominent example is the 2006 assassination of former FSB officer Alexander Litvinenko in London via polonium-210 poisoning, where a UK public inquiry concluded it was a state-sponsored operation likely approved by President Vladimir Putin, and the European Court of Human Rights upheld Russia's responsibility in 2021 for failing to investigate adequately.^[155] Similarly, the 2018 attempted murder of ex-GRU officer Sergei Skripal and his daughter Yulia in Salisbury, England, using the nerve agent Novichok, was traced to GRU operatives from Unit 29155 by UK and allied investigations, with three suspects charged in absentia.^[153] In 2020, opposition figure Alexei Navalny was poisoned with Novichok during a flight from Tomsk, Siberia; independent labs confirmed the agent, and while Russian authorities attributed it to other causes, Bellingcat and allied reporting identified FSB involvement based on flight and travel data.^[156] These incidents highlight a pattern of deniable chemical assassinations, leveraging Soviet-era expertise, with at least seven such attempts cataloged globally since 2014.^[152] Domestically and in conflict zones, Russian forces have conducted targeted operations against insurgents, notably in Chechnya during the 1990s-2000s wars, where special forces eliminated rebel commanders like Aslan Maskhadov in 2005 via precision strikes, justified as counter-terrorism.^[151] In Syria since 2015, Russian airstrikes and special operations targeted jihadist leaders, including ISIS figures, though broader campaigns often blurred lines with civilian casualties.^[151] More recently, amid the Ukraine conflict post-2022, Russia has escalated shadow warfare, including alleged assassinations of Ukrainian figures and collaborators, while denying involvement in reciprocal killings.^[157] Investigations, such as those by Western intelligence shared via alliances, consistently point to coordinated state efforts rather than individual actors, underscoring operational sophistication despite occasional exposure.^[154]

Iranian Revolutionary Guard Activities

The Islamic Revolutionary Guard Corps (IRGC), particularly its Quds Force, has engaged in targeted killings abroad primarily against regime dissidents, Iranian-American activists, and perceived enemies of the Iranian government, often employing proxies, criminal networks, or direct operatives to conduct surveillance, abduction plots, and assassinations. These operations, which intensified in the 1980s and persist into the 2020s, aim to eliminate threats to the regime's authority and extend its influence extraterritorially, with the Quds Force coordinating many efforts through specialized units like Unit 840.^[158]^[159] Historical cases include the 1991 assassination of former Iranian Prime Minister Shapour Bakhtiar in Paris, attributed to IRGC operatives, and the 1992 Mykonos restaurant killings in Berlin targeting Kurdish dissidents, for which Iranian officials and IRGC-linked agents were convicted by German courts. In more recent years, the IRGC has orchestrated plots against U.S.-based critics, such as the 2022 murder of U.S. citizen Stephen Troell in Baghdad, Iraq, executed under orders from an IRGC captain who coordinated the shooting.^[158]^[160] Contemporary efforts have focused on high-profile Iranian dissidents and U.S. officials, including multiple indictments in 2024 for IRGC-directed murder-for-hire schemes. For instance, IRGC asset Farhad Shakeri was charged with surveilling and plotting to assassinate Iranian-American journalist Masih Alinejad in New York, employing local associates for a $500,000 bounty, while also receiving instructions to target former U.S. President Donald Trump prior to the 2024 election. Similarly, senior IRGC-Quds Force official Shahram Poursafi faces charges for plotting to kill former U.S. National Security Advisor John Bolton and other officials. These plots often leverage Eastern European criminal networks or unwitting local criminals to maintain deniability.^[161]^[162]^[163] The IRGC has also targeted Israeli and Jewish interests abroad, with Mossad identifying Quds Force officer Behnam Shahriyari in 2025 as directing thwarted attacks on synagogues and Israeli diplomats in Europe and South America, building on patterns of proxy-directed strikes via allies like Hezbollah. Such activities underscore the IRGC's role in asymmetric warfare, though many plots are foiled through international intelligence cooperation, resulting in convictions like those of Azerbaijani criminals Polad Omarov and Rafat Amirov for Alinejad's attempted murder.^[164]^[165]

Other Notable Cases

Operation Condor was a coordinated campaign of political repression and targeted killings conducted by military dictatorships in South America, including Argentina, Chile, Uruguay, Paraguay, Brazil, and Bolivia, from approximately 1975 to 1983. The operation involved cross-border abductions, torture, disappearances, and assassinations of left-wing dissidents, exiles, and suspected subversives deemed threats to the ruling regimes. Declassified U.S. documents reveal that Condor members shared intelligence and logistics for operations, resulting in at least 50-80 confirmed killings abroad, with estimates of total victims exceeding 400 across the network.^[40]^[41] The Democratic Republic of Korea (North Korea) has engaged in numerous state-sponsored assassinations abroad targeting defectors, family members of the ruling Kim family, and perceived enemies since the 1960s. Notable operations include the 1983 bombing of Korean Air Flight 858, which killed 115 people to assassinate South Korean officials, and the 2017 assassination of Kim Jong-nam, the half-brother of leader Kim Jong-un, using VX nerve agent at Kuala Lumpur International Airport in Malaysia; four North Korean agents were implicated, with the attack linked directly to Pyongyang's orders. These actions aimed to eliminate internal threats and deter defection, often employing chemical weapons or operatives disguised as civilians.^[166]^[167] Saudi Arabia has conducted extraterritorial targeted killings against dissidents, most prominently the 2018 murder of journalist Jamal Khashoggi inside its consulate in Istanbul, Turkey, where he was strangled and dismembered by a team of 15 Saudi agents acting on orders from Crown Prince Mohammed bin Salman, according to U.S. intelligence assessments. This operation fits a pattern of transnational repression, including kidnappings and threats against exiled critics in Europe and Canada, to silence opposition to the regime. While domestic executions number in the hundreds annually, foreign operations focus on high-profile figures posing ideological threats.^[168]

Recent Developments and Future Implications

Key Operations Post-2020

In August 2022, the United States Central Intelligence Agency executed a Hellfire missile drone strike from an MQ-9 Reaper aircraft targeting a safe house in Kabul, Afghanistan, eliminating Ayman al-Zawahiri, the longtime leader of al-Qaeda responsible for planning the September 11, 2001, attacks.^[169] The operation, authorized by President Joe Biden, relied on prolonged intelligence surveillance confirming Zawahiri's presence and movement patterns, with no reported civilian casualties.^[169] This strike marked a significant post-Afghanistan withdrawal counterterrorism action, demonstrating persistent U.S. capacity for precision operations in denied areas.^[2] Israel conducted the assassination of Mohsen Fakhrizadeh, head of Iran's nuclear weapons program, on November 27, 2020, near Tehran using a remote-controlled machine gun mounted on a vehicle, operated via satellite link without on-site operatives.^[170] Iranian authorities attributed the killing to Mossad, citing the operation's technical sophistication and lack of explosive residue consistent with prior assassinations.^[170] The strike aimed to disrupt Iran's nuclear advancements, as Fakhrizadeh oversaw covert enrichment and weaponization efforts documented in International Atomic Energy Agency reports.^[171] On July 31, 2024, Ismail Haniyeh, Hamas's political chief, was killed by an explosive device in a Tehran guesthouse during a visit for Iranian presidential inauguration events, with U.S. intelligence assessing Israeli responsibility based on forensic evidence and operational signatures.^[172] The attack, concealed within the building's structure, avoided detection by Iranian security and targeted Haniyeh's role in orchestrating the October 7, 2023, assault on Israel that killed over 1,200 civilians.^[171] Similarly, on September 27, 2024, Israeli airstrikes demolished underground command bunkers in Beirut's Dahiyeh district, killing Hezbollah secretary-general Hassan Nasrallah, who had directed rocket barrages into northern Israel displacing tens of thousands.^[173] Hezbollah confirmed Nasrallah's death alongside several senior commanders, underscoring Israel's escalation in using aerial precision munitions for high-value targets amid ongoing border conflicts.^[173]^[172] Russian intelligence services were linked to thwarted assassination plots post-2020, including a 2024 plan to kill German arms executive Armin Papperger using explosives on his vehicle, intercepted by U.S. and German agencies through intercepted communications.^[92] Iranian efforts focused on unsuccessful plots, such as IRGC-directed schemes against former U.S. officials like John Bolton, involving hired criminals but resulting in no confirmed killings.^[174] These operations highlight a pattern of state-sponsored targeting amid geopolitical tensions, though execution rates varied due to host-nation countermeasures and intelligence disruptions.^[175]

Technological Advancements

Unmanned aerial vehicles (UAVs), commonly known as drones, have revolutionized targeted killing operations since the early 2000s by enabling remote surveillance and precision strikes without risking pilot lives. The U.S. pioneered armed UAVs like the MQ-1 Predator and MQ-9 Reaper, which integrate intelligence, surveillance, and reconnaissance (ISR) capabilities with the ability to launch AGM-114 Hellfire missiles, laser-guided precision munitions designed for minimal collateral damage.^[2] These systems allow operators to monitor targets in real-time via satellite links, confirming identities before strikes, as demonstrated in operations against al-Qaeda and Taliban leaders in Afghanistan and Pakistan starting in 2001. Advancements in precision-guided munitions (PGMs) have further enhanced accuracy, with warheads like the R9X "ninja bomb" variant of the Hellfire featuring pop-out blades for kinetic kills that avoid explosives, reducing unintended casualties in urban environments.^[176] By 2020, smaller drone munitions and loitering munitions—such as those tested in Ukraine—emerged, allowing for portable, one-way attack UAVs that can loiter over targets before detonating, democratizing precision strikes beyond state actors with advanced air forces.^[177]^[178] Artificial intelligence (AI) and machine learning have integrated into targeting processes, automating target identification from vast ISR data. In 2020, the assassination of Iranian nuclear scientist Mohsen Fakhrizadeh utilized a remote-controlled machine gun equipped with AI for facial recognition and tracking, operated from afar to eliminate human operators in the kill chain.^[179] Israel's military employed the Lavender AI system during operations in Gaza from late 2023, which reportedly processed intelligence to generate lists of suspected Hamas operatives for targeted strikes, approving thousands of targets with human oversight limited to seconds per decision despite error rates up to 10% for low-level targets.^[65] These AI tools accelerate the "find-fix-finish" cycle but raise concerns over algorithmic biases and reduced human judgment, as evidenced by investigations into disproportionate civilian impacts.^[180]^[181] Emerging lethal autonomous weapons systems (LAWS) promise further autonomy, with AI enabling drones to select and engage targets independently, though deployment remains limited by technical challenges and international debates as of 2025.^[181] Integration of commercial technologies, such as off-the-shelf drones modified for explosives, has proliferated among non-state actors, blurring lines between state precision operations and insurgent tactics observed in conflicts like Yemen and Ukraine.^[182]

Shifts in Global Norms

International norms historically proscribed assassination as a perfidious act incompatible with the laws of war, a taboo reinforced by customary international law and instruments such as the 1907 Hague Conventions, which banned treachery in killing combatants.^[15] This norm extended to peacetime, viewing state-sponsored killings of foreign leaders or officials as threats to diplomatic relations and sovereignty, as evidenced by the U.S. response to post-World War II revelations of covert operations leading to Executive Order 12333 in 1981, which explicitly prohibited assassination by U.S. personnel.^[183] The prohibition reflected broader consensus against politically motivated murders, distinguishing them from lawful combatant targeting.^[184] Following the September 11, 2001, attacks, the United States reframed targeted killings of non-state actors, particularly al-Qaeda affiliates, as permissible under Article 51 of the UN Charter's self-defense provisions and the paradigm of non-international armed conflict, bypassing the assassination ban by emphasizing operational necessity over political intent.^[185] This approach, operationalized through drone strikes starting in 2002, distinguished killings based on imminent threats rather than covert murder, with over 500 strikes conducted by 2021 without repealing Executive Order 12333.^[25] Israel's longstanding policy of preemptive strikes against militants since the 1970s provided a precedent, upheld by its Supreme Court in 2006 as lawful when proportionate and intelligence-based.^[186] These practices eroded the absolute norm through repeated state action, shifting emphasis to contextual legality under international humanitarian law rather than categorical prohibition.^[22] State practice by multiple actors has further normalized targeted killing, with Russia employing it against Chechen leaders and in Syria, and Iran conducting extraterritorial operations against dissidents and scientists, contributing to a de facto acceptance absent consistent enforcement mechanisms.^[5] By 2021, at least 14 states, including Nigeria and Pakistan, had engaged in such operations, often justified domestically as counterterrorism despite international criticism from bodies like the UN Human Rights Council, whose reports frequently reflect institutional biases favoring non-Western perspectives on sovereignty.^[4] This proliferation indicates a gradual norm transformation via customary international law formation, where powerful states' consistent practice, unpunished by peers, overrides rhetorical condemnations.^[185] The 2020 U.S. drone strike killing Iranian General Qassem Soleimani on January 3 near Baghdad tested boundaries by targeting a state military official, justified as preemptive self-defense against planned attacks but criticized as reviving state-on-state assassination risks.^[187] While eliciting UN Security Council debates and resolutions condemning escalation, the operation faced no sanctions from allies and prompted no reciprocal norm reinforcement against similar acts, underscoring selective outrage influenced by geopolitical alignments.^[188] Today, global norms remain contested, with targeted killing increasingly viewed as a viable tool against existential threats when minimally collateral, though human rights frameworks persist in demanding due process equivalents, highlighting ongoing tension between security imperatives and sovereignty principles.^[91]

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Top U.S. officials invoke both the doctrine of self-defense and international humanitarian law as legal justification for the targeted killing program.
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Aug 15, 2020 · In it, the Special Rapporteur addresses the issue of targeted killings using armed drones, particularly in light of the proliferation in the use ...
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10 This means that, outside situations of armed conflict, targeted killings in the sense of the intentional killing of certain persons who pose a less than ...
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Jan 24, 2013 · NEW YORK – The United Nations announced this morning the official launch of an investigation into targeted killings by the United States and ...
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extrajudicial executions, stated that within certain situations targeted killings are legal under international law. 14. This article acknowledges the political ...
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Jan 3, 2020 · Rather, the heart of the debate surrounding targeted killing is the justifications for its use, from both American and international legal ...
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[PDF] Targeted Killing as Active Self-Defense
In addition, to appreciate the considerations involved in implementing a policy of targeted killing, it is critical to understand the fundamental difference ...Missing: terminology | Show results with:terminology
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Although governments that engage in targeted killing will usually invoke self-defence as a primary justification, they often seem on thin ice in doing so.
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The UN Soleimani Report and the U.S. Article 51 Notification
Sep 24, 2020 · ... self-defense and the legality of that use of self-defense. The Facts. On January 2, 2020, a U.S. airstrike killed Qasem Soleimani, the ...
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[PDF] NOTE - FLASH: The Fordham Law Archive of Scholarship and History
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Drone Warfare and the Principle of Discrimination (Chapter 11)
This chapter focuses on the narrow but vexed question of how to apply the in bello principle of discrimination to potential targets of drone strikes.
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Journalists rarely enter the tribal areas where the strikes occur, so analysts are left to rely on government statements when trying to assess militant and ...
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Proportionality in International Humanitarian Law: A Principle and a ...
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Full article: The legal and ethical implications of drone warfare
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Leadership Decapitation: Strategic Targeting of Terrorist Organizations
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Evaluating the Effectiveness of an Israeli Counterterrorism Policy ...
Our indirect, empirical evaluation of the effectiveness of assassinations for Isreali counterterrorism is based on Israeli stock market reactions to news of ...
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Measuring the Effectiveness of Israel's 'Targeted Killing' Campaign
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[PDF] The Degradation Effects of Targeted Drone Killings Against Al ...
Since the terrorist attacks on. 9/11, this threat has been confronted through various counterterrorism measures accompanying the Global War on Terror (GWOT).
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The Moral Legitimacy of Drone Strikes: How the Public Forms Its ...
Nov 17, 2022 · The purpose of this article is to investigate this variation in the public's perceptions of what constitutes a morally legitimate drone strike.
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Questions for the Record from Senator Charles E. Grassley Hearing ...
From 2010 to 2012, LWJ counts 48 civilian and about 1,500 Taliban/al-. Qaida fatalities. That's a rate of 3 percent. Page 3. The New America Foundation uses ...Missing: empirical | Show results with:empirical
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[PDF] Annual Report on Civilian Casualties in Connection with United ...
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The effect of drone strikes on civilian communication: evidence from ...
Jun 15, 2021 · In this note, we examine the effects of drone strikes on patterns of communication in Yemen using big data and anomaly detection methods.Missing: alternatives | Show results with:alternatives
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Minimizing Collateral Damage with the Surgical Application of Force
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US and Iran escalation questions answered: What can the world do?
Jan 8, 2020 · Iran has retaliated to the killing of General Qasem Soleimani by attacking air bases housing US forces in Iraq with ballistic missiles.
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Jan 8, 2020 · Iran retaliated for the killing of Gen. Qassem Soleimani by firing more than a dozen ballistic missiles at two Iraqi air bases housing US forces on Wednesday ...
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Apr 1, 2014 · A theory of organizational resilience explains why decapitation results in the decline of some terrorist organizations and the survival of others.
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[PDF] Living Under Drones | Stanford Law School
Cover Photo: Roof of the home of Faheem Qureshi, a then 14-year old victim of a January 23, 2009 drone strike (the first during President Obama's administration) ...
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[PDF] Death from Above: UAVs and Losing Hearts and Minds
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Mitt Regan's Drone Strike – Analyzing the Impacts of Targeted ...
May 22, 2023 · This book reviews the available empirical evidence on the impact and effectiveness of US drone strikes outside of “war zones”
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Oct 20, 2020 · Backlash need not remain limited to the terrorist organization subject to proactive terrorism policies; it may extend to terrorist groups ...
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Drone Strikes Targeting Terrorist Leaders Could Increase Terrorism -
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May 23, 2016 · Pakistan accused the United States on Sunday of violating its sovereignty with a drone strike against the leader of the Afghan Taliban.
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May 28, 2013 · On May 9, 2013, the Peshawar High Court (PHC) in Pakistan ruled that United States drone strikes on targets in Pakistan illegally breached national sovereignty.
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Significant human rights issues included credible reports of: arbitrary or unlawful killings ... killed due to the Israel-Hizballah conflict. CPJ stated ...
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The Law and Tech of Two Targeted Killings - EJIL: Talk!
Sep 30, 2021 · Turning first to Fakhrizadeh's assassination, one view would be that he was killed in peacetime, that his killing had no nexus to any armed ...
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Focusing in the case of the U.S. drone strikes in Pakistan, this article seeks to debate the legal limits of the employment of these instruments. Despite ...
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Transferring CIA Drone Strikes to the Pentagon
President Barack Obama should sign a directive that consolidates lead executive authority for planning and conducting nonbattlefield targeted killings under ...
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[PDF] DRONE STRIKES - Center for Global Security Research
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[DOC] The Killing Business: A History of the CIA Assassination Program ...
During President Kennedy's time the United States was implementing targeted killings of foreign leaders into its foreign policy through assassinations and they ...
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[PDF] Targeting Anwar Al-Aulaqi: A Case Study in U.S. Drone Strikes and ...
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Drone Warfare - TBIJ
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Qasem Soleimani: US kills top Iranian general in Baghdad air strike
Jan 3, 2020 · Iran's most powerful military commander, Gen Qasem Soleimani, has been killed by a US air strike in Iraq.
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[PDF] The Killing of Ayman al-Zawahiri: On Its Legality and Why the U.N. ...
On July 31, 2022, the Biden Administration successfully eliminated al-Qaeda leader Ayman al-Zawahiri in Kabul, Afghanistan via drone strike. This killing ...
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[PDF] The Cases of Osama bin Laden and Qassem Soleimani
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Which Hezbollah and Hamas leaders have been assassinated?
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Mar 18, 2025 · Political blackmail and kidnapping. Targeted assassinations, including the killing of defectors.7. Soviet active measures focused primarily on ...
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Russia: Transnational Repression Origin Country Case Study
The Russian campaign accounts for 7 of 26 assassinations or assassination attempts since 2014, as catalogued in Freedom House's global survey. It is also ...
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Apr 20, 2021 · Unit 29155, the Russian spies specialising in 'sabotage and assassinations'. Europe. The Czech Republic accused on Saturday the GRU – Russia's ...
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Russia Fatally Poisoned Alexander Litvinenko In London, A Court ...
Sep 21, 2021 · The European Court of Human Rights has found the Kremlin responsible for the 2006 assassination by radiation poisoning of Alexander Litvinenko.Missing: Navalny | Show results with:Navalny
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Poisonous affairs: Russia's evolving use of poison in covert operations
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Personal payback: Assassinations escalate in Ukraine and Russia's ...
Sep 19, 2025 · The second in a series on the shadow war between Russia and Ukraine, this report looks at how Ukraine is using assassinations in retaliation ...<|separator|>
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Trends in Iranian External Assassination, Surveillance, and ...
Feb 8, 2022 · ... murders of political dissidents and others overseas.” But ... Islamic Revolutionary Guard Corps' Quds Force (IRGC-QF), along with ...
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Iran using criminal gangs for hit jobs abroad, court papers show - BBC
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Captain in the Islamic Revolutionary Guard Corps (IRGC) Charged ...
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Justice Department Announces Murder-For-Hire and Related ...
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Revolutionary Guard official charged in alleged plot to kill Iranian ...
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Political and Tactical Implications of Israel's Targeted Killing Strategy
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Although the Taliban committed to preventing terrorist groups from using Afghanistan to stage attacks against the United States or others, the extent of its ...
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Cutting Clean: The Strategic Illusion of Precision Drone Warfare
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Munitions Modernization: The Family of Drone Munitions - Army.mil
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Sep 8, 2025 · The war in Ukraine has shown that small drones can serve as an asymmetric equalizer when paired with rapid innovation cycles and field testing.
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Mohsen Fakhrizadeh: 'Machine-gun with AI' used to kill Iran scientist
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AI and the Future of Drone Warfare: Risks and Recommendations
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Norms and Security: The Case of International Assassination
Ward Thomas of the College of the Holy Cross traces the evolution of the norm against international assassination from Roman times to the present.
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In other civilizations and cultures, for example, assassination itself was often depicted as heroic. See, for example, Franklin L. Ford, Political Murder: From ...
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Does the U.S. Strike on Soleimani Break Legal Norms?
The Trump administration's killing of an Iranian military commander in Iraq raises questions about its legality under domestic and international law.
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The Targeted Killing of General Soleimani: Its Lawfulness and Why It ...
Jan 8, 2020 · On Jan. 3, a targeted drone strike near Baghdad International Airport killed Iranian Maj. Gen. Qassem Soleimani. Killed along with him was Abu Mahdi al- ...