What Happened
- The New START (Strategic Arms Reduction Treaty) — the last remaining bilateral nuclear arms control treaty between the United States and Russia — officially expired on 5 February 2026
- For the first time since the 1969 SALT I negotiations began, there is no legally binding agreement constraining the nuclear arsenals of the world's two largest nuclear powers
- New START had limited each side to 1,550 deployed strategic nuclear warheads, 700 deployed delivery vehicles (ICBMs, SLBMs, bombers), and 800 total deployed and non-deployed launchers
- Russia had suspended its participation in New START inspections in February 2023, citing US support for Ukraine, but both sides nominally remained within treaty limits until expiration
- US Secretary of State Marco Rubio called for a new treaty that — unlike New START — would include China as a signatory party
- Despite expiration, Russia announced it would continue notifying the US of ballistic missile launches, maintaining a minimal line of strategic communication
Static Topic Bridges
History of US-Russia Nuclear Arms Control — From SALT to New START
The era of US-Soviet/Russian nuclear arms control began in 1969 with the SALT I (Strategic Arms Limitation Talks) negotiations — the first bilateral attempt to cap the nuclear competition that had escalated through the Cold War. The subsequent decades produced a succession of treaties that progressively reduced deployed warhead counts, established verification mechanisms, and created a framework of strategic stability. New START (2010) was the culmination of this 57-year process; its expiration without a successor marks the end of this era.
- SALT I (1972): First agreement to cap the nuclear arms race; limited ICBMs and SLBMs; did not reduce existing stockpiles
- SALT II (1979): Signed but never ratified by the US Senate; further limits on delivery vehicles; Soviet invasion of Afghanistan led to US withdrawal from ratification process
- INF Treaty (1987): Eliminated an entire class of nuclear weapons — intermediate-range land-based missiles; US withdrew in 2019, citing Russian violations
- START I (1991): First treaty to require actual reductions in nuclear warheads; US and USSR agreed to reduce to 6,000 strategic warheads each
- Moscow Treaty/SORT (2002): Reduced deployed warheads to 1,700-2,200 each; no verification mechanism
- New START (2010): Signed by Obama and Medvedev; reduced deployed warheads to 1,550 each; robust verification with on-site inspections
- New START expired: 5 February 2026 — the first time since 1972 that no US-Russia nuclear treaty is in force
Connection to this news: The expiration of New START is not merely a bilateral event — it removes the foundational transparency and constraint mechanism that underpinned global nuclear stability for over five decades. Every other nuclear actor — China, India, Pakistan, UK, France, North Korea — calibrates its posture against this baseline.
Nuclear Non-Proliferation Architecture and India's Position
The global nuclear non-proliferation order rests on three foundational pillars: the Nuclear Non-Proliferation Treaty (NPT, 1968), the Comprehensive Test Ban Treaty (CTBT, 1996), and various export control regimes (Nuclear Suppliers Group, Wassenaar Arrangement, MTCR). India is not a signatory to the NPT or CTBT — having developed nuclear weapons outside the NPT framework — and occupies a unique position as a de facto nuclear weapons state that is neither inside the NPT nuclear club nor an explicit pariah.
- NPT (1968): Divides world into Nuclear Weapon States (NWS — US, Russia, UK, France, China, the P5) and Non-Nuclear Weapon States (NNWS); NWS commit to eventual disarmament, NNWS commit not to develop nuclear weapons
- India's position: Not an NPT signatory; has nuclear weapons; declared 'minimum credible deterrence' doctrine; maintains 'No First Use' (NFU) policy
- CTBT: Bans all nuclear test explosions; India has not signed; maintains voluntary moratorium on testing since 1998
- India's 1998 tests ('Operation Shakti'): Declared India a nuclear weapons state; triggered US and other sanctions temporarily
- India-US Civil Nuclear Agreement (2008): Allowed India access to civilian nuclear technology despite not being in NPT — a major exception to the non-proliferation order
- India's nuclear doctrine: Minimum credible deterrence + No First Use + massive retaliation against nuclear use on Indian territory or forces
Connection to this news: The US-Russia nuclear treaty collapse creates a new, less constrained nuclear environment. Without caps on US and Russian arsenals, and with China potentially expanding its nuclear forces, India's doctrine of 'minimum credible deterrence' may come under pressure to be reconsidered — particularly in the context of a potential two-front nuclear environment (Pakistan + China).
The China Nuclear Factor and Strategic Triangularity
A central reason the US rejected a simple renewal of New START is the changed strategic environment — specifically China's rapid nuclear expansion. The US estimates China's nuclear warhead count at approximately 400-500 as of 2024, with projections of 1,000 warheads by 2030. Unlike the Cold War's bilateral US-USSR standoff, nuclear deterrence is now becoming triangular — and the expiration of New START accelerates this shift. The US demands that any new treaty include China; Beijing has thus far refused, arguing its arsenal is too small to warrant inclusion.
- China's estimated nuclear warheads (2024): 400-500 (US DoD estimate), growing rapidly
- China's target (projected): ~1,000 warheads by 2030
- China's nuclear posture: Traditionally 'minimum deterrence'; now modernising with silo-based ICBMs (DF-41), submarine-launched JL-3, and H-20 stealth bomber (in development)
- China's response to US call for trilateral talks: Refused to join; argues arsenal incomparability makes trilateral treaties premature
- India-China nuclear dimension: China borders India; both are nuclear states; India's NFU doctrine is particularly tested by China's posture
- Pakistan's nuclear posture: First-use doctrine; tactical nuclear weapons development (Nasr missile); aimed primarily at India
Connection to this news: The end of US-Russia nuclear constraint mechanisms leaves the broader nuclear environment in flux. For India, which manages deterrence against both China and Pakistan simultaneously, an accelerating US-Russia-China nuclear competition creates a more complex threat environment.
Nuclear Deterrence Theories and Arms Control Regimes — UPSC Perspective
Nuclear deterrence rests on the theory that the certainty of massive retaliation makes the first use of nuclear weapons irrational for any state actor. Arms control treaties reinforce deterrence by providing transparency (preventing miscalculation), limiting the number of weapons (reducing arsenals to politically manageable levels), and establishing communication channels (reducing crisis escalation risks). The expiration of New START removes all three stabilising functions.
- MAD (Mutually Assured Destruction): Cold War deterrence framework; each side retains enough weapons to survive a first strike and retaliate devastatingly — making nuclear war "unwinnable"
- Open Skies Treaty: Allowed aerial surveillance of military activities; US withdrew in 2020, Russia in 2021 — already eliminated before New START expired
- Hotline (Moscow-Washington Direct Communications Link): Established 1963 post-Cuban Missile Crisis; still operational as a diplomatic communication channel
- NPT Review Conferences: Held every 5 years; 2022 conference failed to adopt a final document due to Russia-Ukraine tensions
- Treaty on the Prohibition of Nuclear Weapons (TPNW, 2021): Bans nuclear weapons outright; signed by 90+ non-nuclear states; no nuclear power has signed
- India's position on disarmament: Supports universal, verifiable nuclear disarmament but not NPT-based asymmetric regime
Connection to this news: The expiration of New START is a defining moment in international security. For UPSC Mains (GS2 — International Relations), this event tests understanding of arms control history, nuclear deterrence theory, and the implications of treaty breakdown for a multipolar nuclear world — and specifically for India's strategic calculus.
Key Facts & Data
- New START expiration date: 5 February 2026
- New START limits (when in force): 1,550 deployed strategic warheads; 700 deployed delivery vehicles; 800 total launchers (per side)
- New START signed: 8 April 2010, Prague; by US President Obama and Russian President Medvedev
- Russia suspended New START inspection participation: February 2023 (citing Ukraine war context)
- US-Russia combined deployed nuclear warheads (estimated): ~3,100+ total (1,550 each per old treaty limits)
- China's nuclear warheads (2024 estimate): 400-500; projected 1,000 by 2030
- INF Treaty: US withdrew 2019; Russia withdrew 2019 — eliminated intermediate-range nuclear missiles
- CTBT status: Signed by 187 states; not yet in force (requires ratification by 8 Annex 2 states including India, Pakistan, China, US)
- India's nuclear doctrine: Minimum Credible Deterrence + No First Use (NFU)
- India's estimated nuclear warheads: ~160-170 (SIPRI 2024 estimate)
- Pakistan's estimated nuclear warheads: ~170 (SIPRI 2024 estimate)
- New nuclear disarmament treaty: Proposed by US to include China; Beijing has so far declined