Hypersonic Missiles Explained: The New Nuclear Arms Race

The speaker explains that all major arms control treaties (START 1, START 2, and the ABM Treaty) have become null and void. This is compared to the Patriot Act, which became outdated after 9/11 because it did not account for new technologies like cell phones and voice mail. The speaker explains that Russia has been developing hypersonic missiles of medium range that violate existing treaties, leading President Trump to declare that no treaties are valid. The speaker notes that China, North Korea, and Iran also have hypersonic missile capabilities. This technological advancement has made existing arms control frameworks obsolete and requires new approaches to non-proliferation. The speaker argues that new arms control approaches are needed because existing treaties have become outdated due to technological changes, and that nations must reevaluate their approach to arms control and be willing to be firm in their positions.

Traditional arms control agreements focused on limiting numbers of weapons or deployment locations, but hypersonic weapons break these frameworks. Their dual-use nature—same technology can deliver conventional or nuclear warheads—makes verification difficult. Their speed compresses decision-making time, increasing risks of miscalculation or accidental escalation. The lack of reliable defenses creates incentives for preemptive action in crisis situations. Developing new arms control frameworks for the hypersonic age will require creative diplomacy and technical solutions that don't yet exist.

Arms control implications represent one of the most complex unsolved problems in modern strategic studies. Existing frameworks—the New START treaty, the Intermediate Range Nuclear Forces Agreement before its collapse, the Missile Technology Control Regime—were designed around slower, more predictable threat systems where verification was achievable and response timelines allowed for crisis communication. Hypersonic weapons are designed to be dual-use from the ground up—the same vehicle that can deliver a conventional precision warhead can carry a nuclear payload with minimal modification, and the modification is not externally observable. This makes verification essentially unsolvable under any inspection regime that currently exists. Speed compresses crisis communication windows to the point where traditional hotline calls, mechanisms that prevented accidental nuclear war during Cold War's most dangerous moments, may not be possible before launch authorization decisions must be made.

Three defense approaches are being pursued: laser weapons (limited by atmospheric scattering), AI-based real-time interception, and diplomatic solutions through new arms control treaties. However, the INF Treaty was bilateral, excluding China, which has no interest in revealing its programs. Any new treaty would be bilateral while China remains free to act independently. The historical pattern shows weapons precede arms control: machine guns before Geneva Convention, atomic bombs before Test Ban Treaty. The critical difference: hypersonic weapons reduce warning times so dramatically that diplomatic space during crises practically disappears.

The dual-use nature of hypersonic weapons creates verification problems that make arms control nearly impossible. A hypersonic missile can carry either a conventional warhead or a nuclear warhead; the delivery system is identical. Existing arms control frameworks rely on distinguishing between conventional and strategic weapons, verifying compliance through inspection, and establishing predictable thresholds. Hypersonic systems undermine all these mechanisms because the missile provides so little decision time that the distinction between conventional and nuclear attack becomes operationally meaningless.

Leading nations are developing space-based constellations to detect and counter hypersonic threats. The United States has deployed 28 satellites with infrared sensors in the threat domain, connected to high-altitude platform systems and distributed surveillance architectures. This layered detection architecture provides global look-see capability in likely threat domains. Countering hypersonic weapons requires directed energy weapons—lasers face power and range limitations, while high-power microwave weapons can generate 40 gigawatts in nanosecond pulses. China has developed a compact hypersonic HPM capability producing 10 gigawatts from a cupboard-sized weapon. The challenge involves integrating detection systems, real-time information transfer, and directed energy effectors into a coherent defense architecture capable of tracking and neutralizing hypersonic threats.

Experts speculate that non-kinetic weapons such as directed energy weapons or particle beams could potentially become effective means to counter hypersonic missiles. The U.S. Navy has already begun equipping ships with 150 kilowatt lasers capable of targeting missiles and drones, representing an early step toward developing counter-hypersonic defense capabilities.

Directed energy weapons, specifically high-powered lasers, represent a promising defense technology against hypersonic missiles. The principle involves using a laser beam traveling at the speed of light to intercept and destroy incoming projectiles before they reach their targets. The U.S. Department of War has acknowledged developing and scaling these directed energy systems as a response to hypersonic missile threats, recognizing that conventional interceptor missiles cannot match the reaction speed required to defend against hypersonic attacks.

Beyond the United States, multiple nations are aggressively developing hypersonic and directed energy weapons. China leads with the DF-17 hypersonic glide vehicle already in service, plus air-launched variants and directed energy weapons including handheld lasers capable of disabling drones and fuel tanks. India envisions tactical high-energy lasers with 20 km range and the BrahMos-2 hypersonic missile capped at Mach 6. Japan pursues scramjet-powered cruise missiles and gliding projectiles with specialized armor-piercing warheads for aircraft carriers. South Korea accelerates development to counter North Korean missile threats. Australia commits $9.3 billion through the HIFIRE program for scramjet-powered precision strike missiles targeting Mach 5 speeds, plus directed energy systems for armored vehicles and naval vessels. This global arms race reflects the strategic importance of hypersonic and directed energy technologies in modern warfare.

Hypersonic technology (Mach 5+) enables global reach in 1.5 hours, with Chinese demonstrations proving viability. Unlike ballistic missiles, hypersonic glide vehicles maneuver mid-flight, evading detection and interception. This technology requires constellation satellite support for continuous tracking, embedding edge intelligence at design stage. The integration blurs space-for-defense and defense-for-space boundaries, demanding mission-mode collaboration between academia, startups, industry, and government. Directed energy weapons operate at light speed with no sound signature, existing in three forms: laser (light), microwave, and high-energy particle beams. Power requirements vary by application: 10-100 kW for anti-UAV, 100 kW for anti-missile, and megawatts for ballistic interception. Achieving micro-radian pointing accuracy at several kilometers requires sophisticated stabilization. Advantages include invisibility, silence, low operating costs (one liter fuel per kill), infinite magazine capacity, and rapid multi-target engagement. India has developed indigenous kilowatt-class lasers for various applications, demonstrating practical deployment in anti-drone systems.

The United States faces a complex threat environment including violent extremists and state adversaries seeking to threaten US and allied homelands with long-range conventional, cyber, and nuclear weapons. Conventional Prompt Global Strike (CPGS) addresses this gap by providing the president with flexible military options to strike high-value targets quickly with conventional weapons, complementing rather than replacing existing capabilities. Strategic capabilities extend beyond destruction to influence adversary decision calculus during peacetime and become game changers in wartime. Four national security policy goals guide strategic force development: deterring adversaries, assuring allies, discouraging military competition, and limiting damage when deterrence fails. CPGS provides unique benefits across all four goals. However, the Department of Defense lacks official policy specifying military missions for CPGS weapons, creating three real risks: suboptimal weapons, poor cost-effectiveness, and unnecessary escalation risks with Russia and China. Both Russia and China are actively pursuing long-range prompt conventional strike capabilities as part of their strategic doctrines to enhance anti-access area denial capabilities and hold US and allied homelands at risk.

Prompt Global Strike (PGS) is a US military initiative to deliver precision-guided conventional weapons anywhere in the world within one hour, similar to nuclear ICBMs. The program encompasses surface-launched missiles, hypersonic cruise missiles, and space-based kinetic weapons. Development began under the Bush administration through DARPA's Falcon project but was rejected in 2006 due to fears of triggering Russian nuclear launch warning systems. The Obama administration continued development, with successful Advanced Hypersonic Weapon testing in 2011 demonstrating 3,700 km flight in under 30 minutes. Russia responded with the S-500 anti-hypersonic defense system and high-precision non-nuclear strategic weapons. China developed the DF-ZF hypersonic glide vehicle, conducting flight tests starting 2014. Both nations view US PGS as destabilizing to strategic stability, with Russia stating US policy is the most serious obstacle to nuclear arms reduction. This initiative represents a major shift in conventional strike capabilities and drives strategic competition among major powers.

The Prompt Global Strike (PGS) concept was developed by Pentagon planners as an ambitious and dangerous strategy. It proposes preventive attacks using massive conventional cruise missiles to disarm adversaries and decapitate their leadership. The concept was presented shortly after the United States withdrew from the Anti-Ballistic Missile Treaty with Russia in 2002. This withdrawal pushed Moscow to develop more advanced weapons, including hypersonic missiles and glide vehicles, as a countermeasure.

Conventional Prompt Global Strike (CPGS) refers to the development of ballistic missiles carrying conventional (non-nuclear) warheads capable of striking targets anywhere in the world within approximately one hour, first publicly announced by the U.S. in 2006 but with origins dating back to a 1974 RAND Corporation study; this technology has significant strategic implications including concerns about warhead ambiguity (where conventional missiles might be mistaken for nuclear weapons), destination ambiguity (due to maneuverable trajectories), and target ambiguity (uncertainty about whether targets are conventional or nuclear facilities), which could potentially destabilize international relations and trigger an arms race, as evidenced by similar developments in China (DF-21D anti-ship ballistic missile) and Russia's interest in comparable systems.

The U.S. military has developed three fundamental approaches to achieve prompt global strike capabilities. First, hypersonic weapons (AHW) reach speeds of 5-20 times sound, enabling strikes across continents in under an hour. The Army successfully tested these from Hawaii to Marshall Islands in 30 minutes versus normal 5+ hours. Second, hypersonic aircraft like the HTV-2 maintain GPS signals at 3.6 miles per second, theoretically enabling New York to LA in 12 minutes. Third, submarine-based options revive earlier concepts despite nuclear war concerns, with successful 2020-2021 tests. Each approach addresses the core challenge: delivering conventional ordnance anywhere globally within hours without triggering nuclear retaliation protocols.