# Nuclear Arms Control Nuclear arms control is the effort to limit, reduce, or regulate nuclear weapons through bilateral and multilateral agreements. From the first arms control talks in the 1960s through the expiration of New START in February 2026, treaties constrained the [[Arms Race]], reduced arsenals from a Cold War peak of roughly 70,000 warheads to about 12,000 today, and provided verification mechanisms that built minimum confidence between adversaries. That framework has now almost entirely collapsed. The world's two largest nuclear powers — the United States and [[Russia]] — operate without legally binding limits for the first time since 1972. ## The Treaty Architecture The [[Cold War]] produced a layered system of bilateral agreements between the US and Soviet Union, each addressing a different dimension of the nuclear competition: **SALT I (1972)** — the Strategic Arms Limitation Talks produced the first bilateral limits: a freeze on the number of ICBM and SLBM launchers. Critically, SALT I also produced the Anti-Ballistic Missile (ABM) Treaty, which limited missile defense systems to preserve mutual vulnerability — the condition that makes deterrence stable, as described in [[Nuclear Deterrence Theory]]. The ABM Treaty was the conceptual keystone of the arms control architecture: by ensuring neither side could defend against retaliation, it removed the incentive for first strikes. **SALT II (1979)** set aggregate limits on strategic delivery vehicles. It was signed by [[Jimmy Carter]] and Brezhnev but never ratified by the US Senate after the Soviet invasion of Afghanistan. Both sides observed its limits voluntarily — a pattern of norm compliance without legal commitment that would recur. **The INF Treaty (1987)** eliminated all US and Soviet ground-launched ballistic and cruise missiles with ranges between 500 and 5,500 kilometers. Negotiated by [[Ronald Reagan]] and [[Mikhail Gorbachev]], it removed an entire class of weapons — the intermediate-range missiles that could strike European and Asian targets with minimal warning time. The INF Treaty was the signature achievement of late [[Cold War]] diplomacy and a model for verification: on-site inspections, data exchanges, and the physical destruction of nearly 2,700 missiles. **START I (1991)** reduced deployed strategic warheads to 6,000 each and delivery vehicles to 1,600, with extensive verification provisions. **START II (1993)** would have banned MIRVed ICBMs but never entered into force. **SORT/Moscow Treaty (2002)** set lower warhead limits but lacked verification. **New START (2010)** capped deployed strategic warheads at 1,550 and delivery vehicles at 700, with on-site inspections, telemetry exchanges, and biannual data sharing. ## The Collapse The arms control framework has unraveled through a series of withdrawals, expirations, and failures to negotiate successors: The [[George W. Bush]] administration withdrew from the ABM Treaty in 2002 to pursue missile defense systems — a decision [[Russia]] called destabilizing and that removed the foundational constraint on the strategic relationship. The [[Donald Trump]] administration withdrew from the INF Treaty in 2019, citing Russian violations (the SSC-8/9M729 cruise missile), but the withdrawal also freed the US to develop intermediate-range missiles for the Pacific theater competition with [[China]]. Trump also withdrew from the Open Skies Treaty in 2020, eliminating a confidence-building surveillance mechanism. New START, the last remaining bilateral arms control agreement, expired on February 5, 2026, after Russia suspended participation in 2023 and no successor negotiations were underway. With its expiration, there are no legally binding limits on US or Russian nuclear arsenals — no caps on warhead numbers, no restrictions on delivery systems, no on-site inspections, no data exchanges. The [[US Strategic Nuclear Weapons]] entry documents the current unconstrained environment and its implications. ## The China Problem The bilateral US-Russian framework was built for a two-player game, but the nuclear landscape is now multipolar. [[China]] is expanding its arsenal from an estimated 350 warheads toward a projected 1,000 by 2030, building new ICBM silo fields, and developing submarine-launched ballistic missiles. China has never participated in arms control agreements, arguing that its arsenal is a fraction of American and Russian stockpiles and that the largest arsenals should reduce first. The US position — increasingly bipartisan — is that any future arms control must include China. China rejects this framing. The impasse means that even if US-Russian negotiations resume, the trilateral geometry makes agreements harder to structure, verify, and sustain. A new [[Arms Race]] may be emerging not between two superpowers but among three, with secondary nuclear powers (UK, France, India, Pakistan, Israel, North Korea) adding further complexity. ## The Post-Treaty Landscape Without treaty constraints, the US and Russia face a strategic environment that relies entirely on unilateral restraint and tacit understandings — the most fragile form of arms control. The risks include unconstrained warhead growth (both sides can now deploy far more warheads than New START allowed), the development of novel weapons systems outside existing categories (hypersonic glide vehicles, nuclear-armed autonomous underwater vehicles, fractional orbital bombardment systems), and the loss of transparency mechanisms that prevented worst-case planning. The [[Heritage Foundation]] and hawkish voices argue that arms control constrained American advantages and that the post-treaty environment allows the US to maximize its technological superiority. The counterargument is that unconstrained competition is more expensive (the $1.2-2 trillion modernization documented in [[US Strategic Nuclear Weapons]] could grow further), more dangerous (no inspections means more uncertainty about adversary capabilities), and historically unprecedented — the last time major powers had nuclear weapons without agreements was the 1950s and 1960s, a period that included the [[Cuban Missile Crisis]]. ## RWKB Angle Arms control's collapse tracks the broader pattern the vault documents: the erosion of international institutions and norms by actors who view constraints as disadvantageous. The sequence — ABM withdrawal, INF withdrawal, Open Skies withdrawal, New START expiration — mirrors the pattern of institutional demolition visible in trade policy, environmental regulation, and international agreements across multiple domains. The neoconservative-to-MAGA pipeline documented in the vault provided both the intellectual framework (sovereignty over multilateralism) and the political operators ([[John Bolton]], who opposed virtually every arms control agreement) who executed the withdrawal agenda. The irony is acute: the right-wing position demands nuclear primacy while dismantling the frameworks that managed nuclear competition at lower cost and lower risk. Whether the post-treaty environment produces the "peace through strength" that advocates promise or the unconstrained [[Arms Race]] that critics warn of is the defining question for nuclear security in the 2020s and 2030s. ## See Also - [[US Strategic Nuclear Weapons]] — the arsenal and modernization program - [[Cold War]] — the strategic context for arms control - [[Arms Race]] — the competition arms control tried to manage - [[Nuclear Deterrence Theory]] — the strategic logic underlying agreements - [[Russia]] — bilateral partner and competitor - [[China]] — the emerging third-party complication - [[Cuban Missile Crisis]] — what the pre-treaty era looked like - [[Ronald Reagan]] — INF Treaty negotiation - [[Mikhail Gorbachev]] — arms control partner - [[George W. Bush]] — ABM Treaty withdrawal - [[Donald Trump]] — INF and Open Skies withdrawals - [[Jimmy Carter]] — SALT II negotiation - [[John Bolton]] — arms control opponent - [[Heritage Foundation]] — hawkish arms control positions - [[Nuclear Testing]] — CTBT and testing moratorium