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Conventional Prompt Strike

![STARS_AHW_Kauai_launch.jpg][float-right] Conventional Prompt Strike (CPS) is a United States Navy program to develop and field hypersonic boost-glide missiles capable of delivering conventional warheads for prompt, long-range strikes against high-value, time-sensitive targets.^[1]^[2] The system employs a two-stage solid rocket booster to propel a common hypersonic glide body (C-HGB) that maneuvers at speeds exceeding Mach 5, enabling shorter flight times, extended ranges beyond 1,000 miles, and enhanced survivability against defenses compared to traditional ballistic or cruise missiles.^[1]^[3]^[4] Evolving from earlier Prompt Global Strike concepts, CPS shares its core booster and glide vehicle with the U.S. Army's Long-Range Hypersonic Weapon (LRHW, or Dark Eagle), reflecting joint service efforts to accelerate hypersonic technology maturation amid competition from adversaries like Russia and China.^[5]^[6] Initial deployment focuses on sea-based platforms, including Virginia-class submarine torpedo rooms modified for vertical launch and Zumwalt-class destroyers' peripheral vertical launch systems, with plans for broader integration.^[7]^[8] Development milestones include successful end-to-end flight tests, such as a joint Army-Navy demonstration in December 2024 validating booster and glide body performance, and a pioneering sea-based cold-gas launch in May 2025 from a submerged submarine surrogate, proving encapsulation and ejection mechanisms essential for stealthy operations.^[4]^[7] Despite these advances, the program faces technical challenges like managing aerodynamic heating and plasma interference during glide, alongside escalating costs that prompted a reduction in the fiscal year 2026 budget request for hypersonics to $3.9 billion from prior years, though fielding of initial capabilities remains targeted for the late 2020s.^[6]^[9] CPS represents a strategic pivot toward non-nuclear hypersonic options to deter aggression by compressing adversary response timelines and penetrating advanced air defenses, though its operational effectiveness hinges on resolving guidance precision under hypersonic conditions.^[10]^[11]

Program Overview

Objectives and Strategic Rationale

The Conventional Prompt Strike (CPS) program seeks to equip U.S. naval forces with a hypersonic boost-glide weapon system capable of delivering conventional warheads to any target on Earth within one hour, enabling rapid response to time-sensitive, high-value threats such as mobile missile launchers or command centers.^[12]^[13] This capability addresses limitations in existing subsonic systems like the Tomahawk cruise missile, which require flight times exceeding 24 hours for global reach, thereby closing the gap between tactical responsiveness and strategic range without resorting to nuclear options.^[14]^[15] Strategically, CPS responds to the proliferation of advanced anti-access/area-denial (A2/AD) networks and hypersonic weapons by peer competitors, including China's deployment of DF-21D and DF-26 anti-ship ballistic missiles in the South China Sea and Russia's use of Kinzhal hypersonic missiles in Ukraine since 2022, which challenge U.S. power projection and forward basing.^[16] By penetrating dense air defenses at speeds exceeding Mach 5, CPS provides combatant commanders with a non-nuclear tool to neutralize such threats preemptively, enhancing operational flexibility in contested environments like the Indo-Pacific or Eastern Europe.^[3] From a deterrence perspective, the system's design supports proportional escalation by offering precise, attributable conventional strikes for non-existential provocations, thereby reserving nuclear weapons for scenarios threatening U.S. survival and reducing reliance on atomic forces in regional conflicts.^[17] This aligns with U.S. national security objectives outlined in the 2010 Nuclear Posture Review to diminish nuclear roles while bolstering conventional precision capabilities, mitigating risks of miscalculation where adversaries might interpret sub-threshold attacks as nuclear precursors.^[18]

System Description

The Conventional Prompt Strike (CPS) is a sea-based hypersonic weapon system employing a boost-glide architecture to deliver conventional, non-nuclear payloads for rapid-response strikes against time-sensitive, high-value targets.^[1] Unlike nuclear-armed ballistic missiles, which rely on indiscriminate explosive yield, or slower conventional options like subsonic cruise missiles that afford extended warning times to adversaries, CPS prioritizes maneuverability and speed to penetrate advanced air defenses.^[2] The system launches a booster rocket that accelerates a glide vehicle to hypersonic velocities—exceeding Mach 5—before separation, allowing the glide body to execute atmospheric maneuvers at relatively low altitudes, thereby reducing detectability and enhancing survivability against interception attempts.^[19] This design integrates a precision-guided conventional warhead suited for surgical engagements, such as disrupting mobile surface-to-air missile launchers or hardened command infrastructure, where minimal collateral damage is essential compared to nuclear alternatives.^[20] The hypersonic glide phase enables compressed flight timelines, potentially achieving intercontinental ranges in under an hour, distinguishing CPS from legacy systems limited by predictable trajectories or sub-hypersonic speeds that permit defensive countermeasures.^[21] CPS emphasizes multi-platform flexibility through modular components, primarily configured for vertical launch from U.S. Navy submarines and surface combatants, including Zumwalt-class destroyers and Virginia-class submarines.^[7] It leverages a common hypersonic glide body developed jointly with the U.S. Army's Long-Range Hypersonic Weapon program, facilitating technology sharing that could extend adaptability to ground-based or other launch environments without requiring full-system redesigns.^[22] This shared architecture underscores CPS's role in addressing gaps in conventional prompt global strike capabilities, where speed and precision outweigh the escalatory risks of nuclear employment.^[10]

Technical Characteristics

Missile Components and Design

The Conventional Prompt Strike (CPS) missile employs a boost-glide architecture consisting of a two-stage solid rocket booster stacked with the Common Hypersonic Glide Body (C-HGB). The booster stages use solid rocket motors to provide initial high-thrust acceleration, propelling the C-HGB to hypersonic velocities before separation, with design elements adapted from established missile propulsion systems for reliable vertical launch from naval vessels.^[1]^[20] The C-HGB serves as the unpowered reentry vehicle and glide phase component, featuring a compact, wedge-shaped aeroshell optimized for atmospheric maneuver and sustained hypersonic flight. It incorporates a thermal protection shield and heat-resistant materials to mitigate aero-thermal stresses from friction and compression heating, enabling glide durations without active propulsion while preserving the payload's integrity. This configuration draws from prior boost-glide prototypes, emphasizing survivability against thermal loads exceeding thousands of degrees Celsius.^[1] The payload within the C-HGB comprises a conventional kinetic energy warhead, designed for high-velocity impact to achieve destructive effects through momentum rather than large explosive charges, distinguishing it from nuclear-armed variants in intercontinental systems. This warhead integration prioritizes structural compatibility with the glide body's forebody, ensuring release and terminal stability without nuclear components.^[20]^[1]

Performance and Guidance Systems

The Conventional Prompt Strike (CPS) missile achieves hypersonic velocities exceeding Mach 5 during its glide phase, enabling it to follow depressed trajectories that reduce flight times and compress enemy warning periods relative to traditional ballistic missiles with higher apogees.^[23] This speed profile, combined with atmospheric maneuvering, complicates interception by conventional missile defenses designed for predictable ballistic paths.^[24] Operational range for CPS, leveraging the Common-Hypersonic Glide Body (C-HGB), exceeds 2,775 kilometers, allowing strikes against time-sensitive targets from forward naval positions with global potential when launched from assets positioned accordingly.^[25] The system's maneuverability during glide further enhances survivability against area defenses by enabling course adjustments to evade threats.^[23] Guidance employs inertial navigation augmented by GPS for mid-course corrections, with the C-HGB demonstrating precision capable of sub-meter accuracy in developmental tests, as evidenced by Army evaluations of the shared glide body achieving impacts within 15 centimeters of intended points.^[26]^[27] This resilience to electronic warfare stems from the hypersonic regime's limited exposure to jamming windows and the glide vehicle's autonomous terminal-phase capabilities.^[28]

Development and Testing

Historical Background and Early Concepts

The conceptual origins of Conventional Prompt Strike (CPS) trace to post-Cold War strategic reassessments in the United States, where reductions in nuclear forces under the 2001 Nuclear Posture Review highlighted the limitations of relying solely on nuclear weapons for time-sensitive global strikes against emerging threats.^[29] With the U.S. nuclear arsenal shrinking to 1,700-2,200 operationally deployed warheads as directed by President George W. Bush in 2001, defense planners recognized that nuclear options carried unacceptable escalatory risks for non-nuclear targets, such as mobile missile launchers or terrorist facilities, necessitating non-nuclear alternatives capable of rapid, precision delivery. This shift was driven by the causal reality that subsonic cruise missiles, like the Tomahawk, required hours to reach distant targets, rendering them ineffective against fleeting threats in high-end conflicts with peer adversaries. Early concepts coalesced around the Prompt Global Strike (PGS) initiative, initially explored under the Missile Defense Agency and influenced by the 2001 Quadrennial Defense Review's emphasis on transformative global strike capabilities.^[30] The Defense Advanced Research Projects Agency's (DARPA) FALCON project in the early 2000s further advanced hypersonic technologies for conventional rapid global reach, aiming to deliver munitions from the continental U.S. to anywhere worldwide within hours.^[24] These efforts addressed the strategic gap exposed by proliferating ballistic missile threats from states like Iran and North Korea, whose programs demonstrated the need for strikes that could neutralize time-urgent targets without the ambiguities of nuclear signaling.^[31] Congressional authorization in 2008 formalized the Conventional Prompt Global Strike program through the Duncan Hunter National Defense Authorization Act for Fiscal Year 2009 (H.R. 5658), directing the Department of Defense to develop and report on non-nuclear prompt strike systems while prioritizing technologies to distinguish conventional launches from nuclear ones, thereby mitigating misinterpretation risks.^[32] This pivot to conventional payloads was rooted in first-principles analysis of deterrence dynamics, where nuclear ambiguity could provoke unintended escalation, particularly against adversaries perceiving any intercontinental ballistic missile launch—regardless of payload—as an existential threat.^[17] The program's early focus thus emphasized boost-glide and ballistic systems to achieve minutes-scale response times, overcoming the inherent speed constraints of legacy conventional arsenals.^[33]

Predecessor Programs and Tests

The Advanced Hypersonic Weapon (AHW) program, led by the U.S. Army Space and Missile Defense Command, conducted early boost-glide hypersonic flight tests that laid groundwork for subsequent systems like Conventional Prompt Strike (CPS). On November 17, 2011, the first AHW test launched from the Pacific Missile Range Facility in Kauai, Hawaii, using a three-stage booster to deploy the glide vehicle on its intended trajectory over the Pacific Ocean, successfully collecting data on hypersonic technologies and long-range atmospheric flight performance.^[34]^[35] A follow-on test on August 25, 2014, encountered a flight anomaly shortly after launch from the same facility, leading to early termination and highlighting persistent challenges in vehicle stability and control during hypersonic reentry.^[36]^[37] Parallel efforts under DARPA's Falcon program tested the Hypersonic Technology Vehicle-2 (HTV-2), an unmanned glide vehicle designed to validate hypersonic aerodynamics and guidance at speeds exceeding Mach 20. The initial HTV-2 flight in 2010 experienced a booster malfunction that prevented full glide phase execution, though it provided partial data on high-speed dynamics.^[38] The second test on August 11, 2011, achieved booster separation and hypersonic glide for approximately nine minutes, demonstrating controlled flight at extreme velocities before loss of contact due to aerodynamic heating and control issues, which informed glide body designs for CPS by confirming key principles of maneuverability and thermal management.^[33]^[39] In the 2010s, the U.S. Navy initiated feasibility studies for submarine-launched hypersonic variants under the broader Conventional Prompt Global Strike framework, focusing on adapting boost-glide technologies to vertical launch system constraints such as missile tube dimensions and underwater ejection dynamics. These assessments, beginning around 2014, identified integration challenges for platforms like Virginia-class submarines, including the need for compact common hypersonic glide bodies to enable prompt conventional strikes from submerged assets.^[40]^[41] Outcomes from AHW and HTV-2 tests directly reduced risks in these studies by validating core hypersonic components, paving the way for CPS-specific adaptations despite setbacks in full-duration flights.^[42]

Recent Developments and Milestones

In 2023 and 2024, the Conventional Prompt Strike program conducted a series of flight tests that demonstrated end-to-end boost-glide vehicle performance, including trajectory validation and data collection on system integration.^[43] These efforts resolved anomalies identified in earlier evaluations, such as guidance precision and thermal management issues, contributing to improved maturity despite delays from test failures.^[5]^[43] The fiscal year 2025 budget request included Conventional Prompt Strike within the Department of Defense's $6.9 billion allocation for hypersonic weapon development, emphasizing accelerated prototyping to address capability gaps.^[44] This funding supported ongoing risk reduction measures, aligning with Government Accountability Office recommendations to prioritize ground-based simulations and modular testing to mitigate flight anomalies before full-scale demonstrations.^[43] On May 2, 2025, the U.S. Navy executed the first sea-based test of the Conventional Prompt Strike missile using a cold-gas launch system from a submerged platform off Florida's coast, confirming ejection reliability and initial boost-phase separation for ship- and submarine-compatible operations.^[7] In September 2025, integration advanced on the USS Zumwalt destroyer, incorporating the hypersonic glide vehicle into the ship's vertical launch system and enabling initial at-sea verification of launch sequencing.^[8]

Deployment and Integration

Naval Platforms

The U.S. Navy's Conventional Prompt Strike (CPS) program prioritizes integration into Zumwalt-class guided-missile destroyers as the initial surface combatant platform, leveraging their existing peripheral vertical launch systems (PVLS) modified to accommodate CPS all-up-rounds. Two Zumwalt-class ships are undergoing modernization specifically for CPS fielding, with live-fire testing aboard USS Zumwalt (DDG-1000) scheduled to commence in fiscal year 2027 or 2028.^[22]^[45]^[46] This approach exploits the destroyers' advanced power generation and modular design, enabling up to 12 CPS missiles per ship without requiring extensive hull alterations.^[1]^[47] For submerged operations, CPS integration targets Virginia-class Block V attack submarines, which incorporate the Virginia Payload Module (VPM)—a 28-tube extension providing capacity for larger-diameter hypersonic weapons launched via vertical launch systems while submerged.^[19] The VPM's design supports CPS's boost-glide vehicle requirements, with initial operational capability on these submarines projected for the early 2030s, aligning with Block V procurement starting in the late 2020s.^[5]^[48] This timeline reflects ongoing adaptations to ensure compatibility with the submarines' stealth profiles and mission systems, including fire control upgrades for hypersonic targeting.^[49] These naval integrations enhance feasibility by utilizing proven platforms, reducing development risks associated with new hull forms, and enabling prompt strike from dispersed, mobile assets resistant to preemptive targeting.^[19]^[50]

Army Collaboration and Shared Technologies

The Conventional Prompt Strike (CPS) program collaborates with the U.S. Army's Long-Range Hypersonic Weapon (LRHW), designated Dark Eagle, through shared development of the Common-Hypersonic Glide Body (C-HGB), a maneuverable glide vehicle designed for hypersonic speeds exceeding Mach 5.^[51]^[52] Both systems also utilize a common two-stage rocket booster, originally developed by the Navy, which enables ground and sea launches while reducing production redundancies and overall program costs via joint manufacturing and supply chains.^[23]^[4] This commonality allows the Department of Defense to allocate resources more efficiently toward countering peer adversaries' anti-access/area-denial capabilities, rather than duplicating efforts across services.^[53] Joint flight tests in 2024 validated the interoperability of these shared components, including two end-to-end all-up-round demonstrations of the C-HGB that confirmed hypersonic performance over extended ranges.^[54]^[55] A December 12, 2024, test from a ground-based launcher successfully integrated the Army's transporter erector launcher with the common booster and glide body, providing data that refines naval adaptations while accelerating fielding timelines for both services.^[4]^[56] These efforts demonstrate how Army-led ground prototyping informs CPS sea-based variants, fostering cost savings estimated through shared testing infrastructure and avoiding service-specific silos.^[54]

Strategic and Operational Role

Deterrence and warfighting Advantages

The Conventional Prompt Strike (CPS) system strengthens U.S. deterrence by providing a credible, non-nuclear capability to rapidly engage high-value, time-sensitive targets worldwide, thereby expanding conventional response options and diminishing reliance on nuclear escalation for addressing regional aggressions. This prompt global strike potential, achievable within approximately one hour via boost-glide hypersonic delivery, alters adversary decision-making by imposing immediate risks on mobile or fleeting assets that traditional subsonic or slower platforms cannot match.^[57]^[18] Such attributes fill gaps in existing conventional forces, enhancing the overall versatility and reliability of the U.S. strategic posture against peer-level threats.^[18] In warfighting contexts, CPS offers superior survivability through its hypersonic glide vehicle's maneuverability at speeds exceeding Mach 5, which complicates interception by advanced integrated air defense systems compared to predictable ballistic trajectories. Empirical evidence from joint U.S. Army and Navy flight tests, including a successful end-to-end demonstration on December 12, 2024, validates this responsiveness and evasion capability against defended environments.^[58]^[54] The system's design enables precision strikes on distant, hardened targets, providing commanders with flexible, proportional conventional tools that support controlled escalation ladders without crossing nuclear thresholds.^[59] These advantages collectively enable non-nuclear reprisals to limited provocations, fostering strategic stability by demonstrating U.S. resolve through empirically verifiable conventional potency rather than ambiguous nuclear signaling. Defense Science Board assessments underscore how such alert-ready, low-cost hypersonic options bolster deterrence credibility without introducing undue instability, as they prioritize causal denial of adversary objectives over punishment alone.^[60]^[18]

Capabilities in Peer Competitor Scenarios

The Conventional Prompt Strike (CPS) system enhances U.S. operational capabilities in peer competitor conflicts by enabling hypersonic strikes against mobile, time-sensitive targets within adversaries' anti-access/area-denial (A2/AD) networks. In scenarios involving China, CPS facilitates rapid neutralization of assets like DF-21 missile batteries, which form a core element of Beijing's A2/AD strategy in the Western Pacific by threatening U.S. naval forces at extended ranges. The system's boost-glide vehicle, achieving speeds exceeding Mach 5, allows for maneuverable trajectories that complicate interception by Chinese defenses, permitting strikes from submarine or surface platforms outside the initial A2/AD envelope.^[24]^[10] This capability supports early degradation of mobile launchers, which can relocate within hours, thereby preserving U.S. access to contested areas without immediate territorial basing concessions.^[61] In potential engagements with Russia, CPS provides a means to target relocatable air defense systems such as S-400 batteries, which safeguard critical infrastructure and troop concentrations in theaters like the Baltic or Black Sea regions. The hypersonic vehicle's low-altitude glide phase and velocity overwhelm legacy interceptors, as evidenced by analyses of Russian systems' limitations against maneuvering high-speed threats.^[62] Unclassified wargame insights from simulations of peer conflicts underscore the value of such prompt strikes in disrupting integrated air defenses during the opening phases, where delays could enable adversary escalation.^[63] Sea-launched CPS maintains strategic ambiguity and survivability, launching from dispersed naval assets to avoid preemptive counterforce targeting of fixed sites.^[64] Deployed from forward-positioned submarines and destroyers, CPS extends U.S. global reach, allowing responses to aggression—such as island seizures or border incursions—without ceding initiative or relying on vulnerable airfields. This maritime basing preserves force primacy by enabling strikes over intercontinental distances in under an hour, contrasting with slower conventional alternatives.^[24] Open-source assessments confirm CPS timelines offer an edge over adversaries' theater-range hypersonics, which lack equivalent conventional global promptness, as China's DF-17 and Russia's Kinzhal prioritize regional arcs rather than worldwide responsiveness.^[65] In wargamed peer scenarios, this temporal advantage facilitates sequential targeting of command nodes and mobile threats, compounding disruptions before full adversary mobilization.^[66]

International Reactions

China

China has portrayed the United States' Conventional Prompt Strike (CPS) program, previously known as Prompt Global Strike (PGS), as a destabilizing and pre-emptive capability that undermines strategic stability and contributes to an arms race.^[67] Chinese analyses label PGS/CPS alongside U.S. ballistic missile defenses as the "spear and shield" of offensive warfare, arguing it enables rapid conventional strikes against Chinese assets, including nuclear forces, thereby pressuring Beijing's deterrent posture.^[68] Official rhetoric, including in state media and defense commentaries, frames these U.S. efforts as part of a broader encirclement strategy in the Asia-Pacific, exacerbating tensions over regional disputes like Taiwan.^[69] In parallel, the People's Liberation Army (PLA) has accelerated its hypersonic glide vehicle (HGV) programs, notably the DF-17 medium-range ballistic missile equipped with an HGV warhead, which entered service around 2019 following tests dating back to 2014.^[70] The DF-17, capable of speeds exceeding Mach 5 and maneuvers to evade defenses, is designed for precision strikes against regional targets, including U.S. bases and naval assets in potential Taiwan contingencies, enabling anti-access/area-denial (A2/AD) operations.^[71] Similarly, the DF-27, a longer-range system tested in recent years with ranges up to 5,000-8,000 km, incorporates hypersonic elements for both conventional and nuclear payloads, further enhancing PLA capabilities to threaten distant U.S. facilities like those on Guam.^[72] These developments, including deployments of multiple DF-17 brigades, align temporally with U.S. PGS milestones but reflect China's independent pursuit of prompt strike technologies to counter perceived intervention threats.^[73] PLA defense white papers, such as the 2019 edition, assert that China avoids nuclear arms races and maintains minimal deterrence, while criticizing U.S. advancements as provocative.^[74] Yet, empirical evidence from China's hypersonic tests—including a 2021 orbital maneuver vehicle demonstration and routine DF-17 firings near Taiwan—demonstrates offensive maturation that mirrors CPS objectives, such as rapid, non-nuclear precision strikes within minutes.^[75]^[76] This progression, with over 1,000 missiles oriented toward Taiwan including hypersonic variants, underscores that U.S. CPS addresses an existing asymmetry rather than initiating escalation, as PLA systems prioritize coercive leverage in cross-strait scenarios over purely defensive needs.^[77]^[78]

Russia

Russian President Vladimir Putin announced the development of advanced hypersonic systems, including the Avangard hypersonic glide vehicle, during his March 1, 2018, address to the Federal Assembly, claiming these weapons rendered U.S. missile defenses obsolete and achieved speeds up to Mach 27 while carrying nuclear payloads of up to two megatons.^[79]^[80] This revelation intensified U.S. concerns over strategic imbalances and accelerated efforts in programs like Conventional Prompt Strike (CPS), which aim for rapid, precision conventional strikes to counter such peer capabilities without nuclear escalation.^[81] Russia has deployed analogous systems, such as the air-launched Kinzhal missile, first used operationally against Ukrainian targets in March 2022, reaching speeds of Mach 10 and serving as a tactical hypersonic analog for prompt strikes.^[82] Similarly, the Zircon hypersonic cruise missile, capable of Mach 9 speeds and nuclear arming, has been integrated into naval platforms, mirroring CPS's dual-use potential for anti-ship or land-attack roles despite official emphasis on conventional applications.^[83] These developments reflect parallel advancements in hypersonic technology between Russia and the U.S., driven by mutual perceptions of vulnerability in existing defenses. Russian strategic analysts and officials have criticized U.S. CPS as eroding distinctions between conventional and nuclear strikes, arguing it could preemptively target Russian nuclear assets and provoke escalatory responses, with some statements indicating any detected incoming ballistic trajectory might be treated as nuclear.^[84]^[85] However, Russia's own deployment of dual-capable hypersonics like Avangard and Zircon employs similar blurring tactics, suggesting critiques stem partly from deterrence posturing rather than doctrinal opposition. CPS, in this context, bolsters NATO's conventional rapid-response options against Russian aggression patterns observed in Ukraine, prioritizing non-nuclear precision to avoid broader escalation while addressing gaps in allied deterrence.^[17]

Other Nations

Under the AUKUS security partnership, Australia and the United Kingdom have pursued collaborative hypersonic technology development with the United States, including agreements to share testing facilities and accelerate capabilities under Pillar II.^[86] ^[87] In November 2024, the three nations formalized arrangements for joint hypersonic flight testing campaigns, aiming for six tests by 2028, which complement U.S. Conventional Prompt Strike (CPS) efforts by enhancing allied interoperability in high-speed strike systems.^[88] India has advanced its independent hypersonic programs, notably the BrahMos-II hypersonic cruise missile developed in partnership with Russia, targeting speeds of Mach 6 or higher, as part of a global response to emerging hypersonic threats rather than direct adoption of CPS technology.^[89] ^[90] This effort reflects indirect competitive pressures from international advancements, including U.S. initiatives, driving indigenous and joint developments to bolster regional deterrence.^[6] European Union nations have expressed views framing U.S. hypersonic programs like CPS as a counterbalance to Russian and Chinese capabilities, amid acknowledged gaps in Europe's own hypersonic defenses and strike systems.^[91] Officials in countries such as Germany and France have highlighted the stabilizing role of allied conventional hypersonic options in NATO scenarios, prioritizing integration over independent replication due to developmental lags.^[92] Proliferation risks from CPS-related technologies remain a concern for secondary actors, with assessments indicating that states like North Korea and Iran are likely to acquire hypersonic weapons independently, potentially through reverse-engineering or foreign assistance.^[93] ^[6] However, CPS's emphasis on conventional payloads mitigates direct contributions to nuclear escalation, distinguishing it from adversaries' nuclear-capable hypersonic programs and focusing cooperative effects among allies.^[10]

Criticisms and Challenges

Technical and Developmental Hurdles

Early development of hypersonic technologies underpinning Conventional Prompt Strike (CPS) encountered significant test anomalies. In August 2014, a test of the Advanced Hypersonic Weapon (AHW), a precursor to CPS components, failed due to a flight anomaly shortly after launch from Kodiak, Alaska, resulting in the vehicle's destruction and loss of data.^[94] ^[37] Similarly, Joint Flight Campaign-1 (JFC-1) in 2022 experienced an in-flight anomaly that prevented full data collection across the intended profile, attributed to control and telemetry issues, though the root cause was later identified and corrected by the Navy.^[20] These incidents highlighted challenges in booster performance, glide body control, and data recovery under hypersonic conditions, including potential thermal management strains from aerodynamic heating.^[1] Cost management has posed ongoing hurdles, with the Government Accountability Office (GAO) noting in 2024 that hypersonic programs like CPS face difficulties in accurate cost estimation due to immature technologies and limited prior experience, contributing to risks of overruns amid over $10 billion in projected investments across shared Army-Navy efforts.^[43] The GAO highlighted that while CPS benefits from joint development of the Common Hypersonic Glide Body with the Army's Long-Range Hypersonic Weapon, reducing some duplication, persistent technical risks in areas like navigation and integration have delayed milestones and inflated lifecycle expenses.^[58] DOT&E assessments have further critiqued narrow testing scopes, urging broader operational evaluations to mitigate suitability gaps.^[25] Despite these challenges, progress has been achieved through iterative resolutions and recent demonstrations. Corrective actions post-JFC-1 enabled subsequent flight tests, culminating in a successful end-to-end CPS missile flight from Cape Canaveral Space Force Station on April 25, 2025, validating sea-based launch viability and prototype performance.^[1] ^[95] This test, announced May 2, 2025, confirmed key capabilities in range, accuracy, and survivability, advancing CPS toward operational deployment on Zumwalt-class destroyers and Virginia-class submarines while addressing prior control and thermal hurdles via refined designs.^[7]

Strategic Debates and Risks

Proponents of Conventional Prompt Global Strike (CPGS) argue that it strengthens strategic stability by providing non-nuclear options for rapid, precise strikes against time-sensitive targets, thereby reducing reliance on nuclear weapons for deterrence and allowing graduated responses in crises.^[18]^[96] According to Department of Defense assessments, such capabilities address gaps in conventional firepower against distant threats, enhancing U.S. credibility in deterring aggression without escalating to nuclear thresholds, particularly in scenarios involving rogue states or regional powers.^[96] This view counters arguments from arms control advocates—who often emphasize de-escalatory restraint—that prioritize limiting U.S. innovations amid adversaries' expansions, such as China's construction of approximately 320 new intercontinental ballistic missile silos since 2021, which proceeds independently of U.S. restraint.^[97]^[17] Critics, including some analysts from organizations focused on nonproliferation, contend that CPGS could undermine stability by prompting miscalculation, as adversaries like Russia or China might interpret a hypersonic launch—sharing ballistic trajectories with nuclear missiles—as a nuclear first strike, compressing decision timelines and risking preemptive responses.^[98]^[99] However, proponents rebut this by noting technological discriminability: CPGS systems employ boost-glide vehicles or alternative profiles distinguishable from nuclear intercontinental ballistic missiles via infrared signatures, flight paths, and intelligence monitoring, mitigating false alarms in practice.^[100] U.S. tests, including multiple hypersonic glide vehicle firings since the early 2010s, have not triggered observed destabilizing reactions from adversaries, with no documented escalatory incidents despite public announcements and telemetry data sharing in some cases.^[6] The proliferation of prompt-strike technologies appears driven more by U.S. developmental delays than by reactive arms racing, as Russia and China advanced their hypersonic systems independently—Russia deploying the Avangard glide vehicle in 2019 and Kinzhal air-launched missile earlier, while China fielded the DF-17 in 2019—predating full U.S. operationalization of CPGS equivalents.^[101]^[102] This timeline underscores that adversary programs stem from intrinsic strategic ambitions, including countering U.S. conventional superiority, rather than mirroring American initiatives, which faced setbacks like test failures and funding shifts from the 2000s onward.^[103] Empirical data from these developments show no causal link to heightened global instability, as mutual advancements have coincided with sustained deterrence equilibria absent major conflicts.^[104]

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[PDF] Conventional Prompt Strike (CPS) - DOT&E
The Navy's CPS program will provide the all-up-round missiles and elements of the weapons control system for the Army's. LRHW (Dark Eagle) program in. FY23. The ...
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Army and Navy Successfully Test Conventional Hypersonic Missile
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[22]
Navy Wants to Start Conventional Prompt Strike Tests Aboard USS ...
Nov 14, 2024 · The Navy wants to start testing its Conventional Prompt Strike missile system aboard guided-missile destroyer USS Zumwalt (DG-1000) in 2027 or 2028.
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The U.S. Army's Long-Range Hypersonic Weapon (LRHW)
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U.S. Hypersonic Weapons and Alternatives
Jan 31, 2023 · The Navy's Intermediate-Range Conventional Prompt Strike. The Navy's boost-glide missile, which will also carry the Common Hypersonic Glide Body ...<|control11|><|separator|>
[25]
Conventional Prompt Strike: The US Navy's Hypersonic Weapons ...
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[26]
Hypersonic missile inertial and GPS guidance | Military Aerospace
Mar 28, 2025 · The hypersonic Lockheed Martin Conventional Prompt Strike (CPS) system is a boost-glide hypersonic missile with a two stage solid rocket motor, ...<|control11|><|separator|>
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Hypersonic Missile Tests Demonstrate 6-in. Accuracy, U.S. Army Says
Oct 13, 2020 · U.S. Army Secretary Ryan McCarthy on Oct.13 said the accuracy of hypersonic missiles now in development is within half a foot of targets.
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Army Hypersonic Weapons Demonstrating Super Accuracy
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[PDF] NOT FOR DISTRIBUTION UNTIL RELEASED BY THE HOUSE ...
of Prompt Global Strike (PGS). My views on PGS were formed initially during the development of the 2001 Nuclear Posture. Review (NPR). During the 2001 - 2006 ...
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... global, strike capabilities has been addressed in general defense policy studies, such as the 2001, 2006, and 2010 Quadrennial Defense Review (QDR) Reports.Missing: initiative origins<|separator|>
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[PDF] Conventional Prompt Global Strike and Long Range Ballistic Missiles
Mar 6, 2018 · This report provides an overview of the rationale for the PGS/prompt strike mission and the possible deployment of conventional warheads on long ...
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H.R.5658 - 110th Congress (2007-2008): Duncan Hunter National ...
(Sec. 238) Authorizes funds for conventional prompt global strike capability development only for those activities expressly delineated in the expenditure plan ...
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HTV-2: Falcon Hypersonic Technology Vehicle 2 - DARPA
Data from the program informs policy, acquisition, and operations decisions for future Department of Defense Conventional Prompt Global Strike programs.
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DoD announces successful test of Army Advanced Hypersonic ...
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[35]
Army tests Advanced Hypersonic Weapon over Pacific
Nov 21, 2011 · A three-stage booster system launched the AHW glide vehicle and successfully deployed it on the desired flight trajectory. The vehicle flew a ...
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Flight anomaly aborts US Army's advanced hypersonic weapon testing
Aug 25, 2014 · The US Army Space and Missile Defense Command/Army Forces Strategic Command has aborted the flight test of the advanced hypersonic weapon (AHW) ...
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US Navy Explores Sub-Launched Hypersonic Missiles - The Diplomat
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Navy Developing Prompt Global Strike Weapon that Could Launch ...
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[42]
Lockheed Martin, Dynetics, and Raytheon awarded contracts for US ...
Oct 3, 2019 · The failure of HTV-2 resulted in the Army's AHW becoming the primary hypersonic payload across the branches though derivatives of HTV-2 are ...
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[PDF] GAO-24-106792, HYPERSONIC WEAPONS: DOD Could Reduce ...
Jul 29, 2024 · The Conventional Prompt Strike effort seeks to deliver a long-range missile system capable of launching the same missile used in The. Long-Range ...
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Report to Congress on Hypersonic Weapons - USNI News
Dec 3, 2024 · The Pentagon's FY2025 budget request for hypersonic research was $6.9 billion—up from $4.7 billion in the FY2023 request. The Pentagon declined ...
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Hypersonic-Armed Destroyers and Submarines are Relocating to ...
Oct 11, 2025 · Two Zumwalt-class destroyers are currently being modernized to field the U.S. Navy's Conventional Prompt Strike (CPS) hypersonic missiles. A ...
[46]
Lockheed secures additional $1 billion CPS award - Inside Defense
Jun 2, 2025 · In November, Navy officials said CPS testing is now scheduled to begin aboard the guided missile destroyer Zumwalt (DDG-1000) in 2027 or 2028 ...
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Repurposing the US Navy's Zumwalt-class destroyers with ...
Aug 19, 2025 · Instead, they are now being repurposed to carry the Conventional Prompt Strike (CPS) hypersonic missile system. Here, we examine the ...
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US Navy's upgrades to Zumwalt Class provide naval leg for ...
Oct 14, 2025 · Beginning with Block VI submarines in the early 2030s, these boats will feature a new payload module designed specifically to carry hypersonic ...<|separator|>
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Pushing Forward, Strategic Systems Programs Expands Support for ...
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Report to Congress on Army's Long-Range Hypersonic Weapon
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Army and Navy Successfully Test Conventional Hypersonic Missile
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[PDF] Conventional Prompt Global Strike and Long Range Ballistic Missiles
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[PDF] Conventional Prompt Global Strike and Long Range Ballistic Missiles
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The United States' military continues to explore long-range conventional prompt strike capabilities to strike 'time- sensitive' targets across the globe on ...
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U.S. "Mach 20" Missiles Threaten To Make Russian AD Systems ...
Dec 19, 2024 · The Navy will integrate its version, called Conventional Prompt Strike (CPS), with the ability to be launched from ships and submarines. The ...Threat To Russia · S-500 · Yenisei Radar
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Apr 22, 2019 · The wargames were played by six student teams, or approximately five persons each. There were three red teams, representing Russia, China ...
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May 10, 2022 · Fortunately, a joint Army-Navy program has brought a hypersonic system – the Conventional Prompt Strike (CPS) System -- through a successful ...<|separator|>
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Mar 6, 2025 · In contrast to aircraft and subsonic missiles, the Navy's hypersonic Conventional Prompt Strike (CPS) missile reaches a 2200 nautical mile ...
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Within China, ballistic missile defense and prompt global strike are labeled as the respective shield and spear of future warfare. They are part of a Chinese ...
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Understanding the Risks and Realities of China's Nuclear Forces
China is seeking to build a nuclear force capable of surviving a nuclear first strike and retaliating with an unacceptable level of damage.
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DF-17 - Missile Threat - CSIS
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As Putin touts hypersonic weapons, America prepares its own ...
Mar 2, 2018 · Russia claims it has a hypersonic weapon. Has the U.S. fallen behind the hypersonic race, and if so, what can be done?
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Ukraine and the Kinzhal: Don't believe the hypersonic hype
May 23, 2023 · Ukraine used a US-supplied Patriot battery to down a Russian Kinzhal missile, which Russian President Vladimir Putin had announced in 2018 was a “hypersonic” ...
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Russian Novel Nuclear Weapons and War-Fighting Capabilities
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Conventional Prompt Global Strike and Russia's Nuclear Forces
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Aug 11, 2020 · Russia's warning has been spurred by new American weapons such as an intermediate range ballistic missile (IRBM) and a conventional Prompt ...
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AUKUS alliance seals plans for collaboration on hypersonics testing
Nov 18, 2024 · The AUKUS alliance signed a new agreement that will see the three nations share each other's testing facilities for hypersonic weapons, ...
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AUKUS nations ink new hypersonic tech sharing agreement
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Hypersonic Defense and Strike Integration in the Pacific
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Strikes in Ukraine Spotlight U.S., European Deficits in Hypersonic ...
Russia's use of hypersonic weapons in Ukraine is the latest escalation in a growing arms race. The Pentagon has experimented with hypersonic weapons for decades ...
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[PDF] Conventional Prompt Global Strike and Long Range Ballistic Missiles
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Report to Congress on Conventional Prompt Global Strike and Long ...
Jan 10, 2019 · Conventional prompt global strike (CPGS) weapons would allow the United States to strike targets anywhere on Earth in as little as an hour.
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Conventional Prompt Global Strike: Progress, Prospects, and ...
Oct 23, 2014 · The danger that a conventional CPGS missile could be mistaken by another country for a nuclear one creates a risk of miscalculation and an ...
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Conventional Prompt Global Strike and Long-Range Ballistic Missiles
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[PDF] Hypersonic Weapons Development in China, Russia and the United ...
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An 'Arms Race in Speed': Hypersonic Weapons and the Changing ...
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The United States began ramping up hypersonic missile development in the early 2000s, and plans to deploy several such weapons over the next decade. Both China ...
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Sep 15, 2022 · Debates in the United States about hypersonic weapons today revolve around acquiring hypersonic missiles and pursuing arms control initiatives.