‘Expiry of nuclear arms treaty alarming’

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1. At a Glance

• New START (New Strategic Arms Reduction Treaty) is — or was — the last surviving bilateral nuclear arms control treaty between the United States and Russia, the world's two largest nuclear-weapon states. [1]
• It expired on 5 February 2026, without renewal or replacement, ending three decades of continuous US-Russia strategic arms limitation architecture.
• Russia's senior security official Dmitry Medvedev (who signed the treaty in 2010 as President) warned its expiry would advance the "Doomsday Clock" — used as a gauge of existential risk — toward catastrophe. [1]
• UPSC relevance: GS-II (international relations, global security regimes), GS-III (nuclear security, technology governance), Prelims (treaties, signatory years, limit numbers).

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2. Why in the News

• 5 February 2026 (Thursday): New START treaty officially expired without extension. [1]
• US President Donald Trump (second term) declined to accept Moscow's offer to voluntarily extend the caps on strategic nuclear weapon deployments. [1]
• Medvedev (Deputy Chair, Russian Security Council) issued a public warning on ~3 February 2026, stating: "I don't want to say that this immediately means a catastrophe… but it should still alarm everyone." [1]
• His remarks explicitly referenced the Doomsday Clock and warned "the clocks are ticking and they obviously have to speed up." [1]
• The lapse marks the first time since 1972 that the US and Russia exist without any mutually binding strategic nuclear arms control treaty.

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3. Background & Evolution

Strategic Arms Control — Chronological Milestones

Year	Event
1963	Partial Nuclear Test Ban Treaty (PTBT) — first multilateral nuclear restraint instrument
1968	Nuclear Non-Proliferation Treaty (NPT) opened for signature; entered into force 1970
1972	SALT I (Strategic Arms Limitation Talks I) + ABM Treaty — US-USSR
1979	SALT II signed (never ratified by US Senate)
1987	INF Treaty — eliminated intermediate-range missiles; US withdrew 2019 citing Russian violations
1991	START I signed — limited US and USSR to 6,000 warheads, 1,600 delivery vehicles; expired 2009
1993	START II signed — never entered into force
2002	SORT (Moscow Treaty) — limited warheads to 1,700–2,200 each
2010	New START signed — Prague, 8 April; Obama & Medvedev; replaced SORT
2011	New START entered into force — 5 February
2021	Biden administration extended New START by 5 years to 5 February 2026
Feb 2023	Russia "suspended" (not withdrawn from) New START participation, citing Western support for Ukraine
Feb 2026	Treaty expires; Trump declines extension [1]

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4. Core Static Facts

Treaty Basics

• Full name: New Strategic Arms Reduction Treaty (New START / SORT II)
• Signed: 8 April 2010, Prague
• Signatories: USA (President Barack Obama) and Russia (President Dmitry Medvedev) [1]
• Entered into force: 5 February 2011
• Original expiry: 5 February 2021; extended 5 years to 5 February 2026
• Nature: Bilateral verification treaty with on-site inspection rights

Key Limits (per party)

• 1,550 deployed strategic nuclear warheads
• 700 deployed ICBMs, SLBMs (submarine-launched ballistic missiles), and heavy bombers equipped for nuclear arms
• 800 total deployed + non-deployed launchers (ICBMs, SLBMs, bombers)

Verification Mechanism

• Up to 18 on-site inspections per year per party
• Mandatory data exchanges every 6 months
• National Technical Means (NTMs) — satellites and other monitoring

Predecessor Treaties

• START I (1991–2009); SORT/Moscow Treaty (2002–2011 — replaced by New START)

Doomsday Clock

• Maintained by the Bulletin of Atomic Scientists since 1947
• Metaphorical clock: midnight = global catastrophe
• January 2023: moved to 90 seconds to midnight (then-closest-ever)
• January 2025: moved to 89 seconds to midnight (closest in history at time of setting)

Nuclear Arsenals (approximate)

• Russia: ~5,580 total warheads (~1,588 deployed strategic)
• USA: ~5,044 total warheads (~1,700 deployed strategic)
• Combined US-Russia share: ~88% of all nuclear weapons globally

India's Position

• India is not a signatory to NPT (nuclear-weapon state outside NPT)
• India maintains No-First-Use (NFU) doctrine
• India is member of Nuclear Suppliers Group (NSG) — pending full membership

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5. Multi-Dimensional Analysis

Geopolitical / Strategic

• Expiry leaves no legally binding cap on US-Russia strategic nuclear deployments for the first time since 1972, removing a key pillar of strategic stability. [1]
• Russia's suspension of participation (Feb 2023) — not formal withdrawal — was linked to the Ukraine war; expiry now converts suspension into permanent absence of constraint.
• Trump's refusal signals a preference for unconstrained nuclear modernisation over arms control diplomacy, reversing the Biden administration's extension rationale.
• Opens risk of unchecked nuclear arms race between the two largest nuclear powers; other states (China, India, Pakistan, North Korea) could recalibrate postures.
• China factor: US increasingly wants any successor treaty to include China, which Beijing rejects as its arsenal (~500 warheads) is far smaller and it has no bilateral treaty with either power.

Legal / Constitutional

• New START was a legally binding executive agreement (ratified by both legislatures); its expiry is automatic — no unilateral withdrawal step needed.
• Successor requires fresh negotiation, Senate (US) ratification (two-thirds majority), and Russian Duma ratification — politically difficult in current climate.
• NPT Article VI obligates nuclear-weapon states to pursue disarmament "in good faith" — expiry without replacement invites criticism that P5 (especially US/Russia) are violating NPT spirit.
• Treaty on the Prohibition of Nuclear Weapons (TPNW, 2017) — already in force; US and Russia are non-signatories; expiry may strengthen calls for broader adherence.

Scientific / Technological

• Without inspection rights, verification of arsenal sizes becomes dependent entirely on intelligence (National Technical Means) — less reliable, more adversarial.
• Nuclear modernisation programmes (Russia's Sarmat ICBM, Poseidon underwater drone, Burevestnik cruise missile; US's B21 Raider, Columbia-class submarines) proceed unconstrained.
• Hypersonic glide vehicles (HGVs) — Russia's Avangard, US developing equivalents — were not fully covered by New START; expiry removes even partial oversight.

Historical

• The US-Russia arms control architecture built since SALT I (1972) — surviving through the Cold War, its end, and post-Soviet turbulence — has now fully collapsed.
• Analogous precedent: US withdrawal from ABM Treaty (2002) under George W. Bush; Russia cited this as a long-term driver of strategic instability.
• INF Treaty collapse (2019) + Open Skies Treaty US withdrawal (2020) + New START expiry (2026) = complete dismantling of the post-Cold War arms control framework within 7 years.

Ethical / Governance

• Doomsday Clock at 89 seconds (2025) reflects the scientific community's assessment that existential risk is at a historic high. [1]
• Global advocacy groups (ICAN — Nobel Peace Prize 2017) argue nuclear-weapon states are failing their disarmament obligations under international law.
• Moral hazard: other nuclear aspirants (North Korea, Iran) may interpret the US-Russia breakdown as validating nuclear deterrence over diplomacy.

Environmental

• Any large-scale nuclear exchange would produce nuclear winter — soot in upper atmosphere blocking sunlight, causing global agricultural collapse, estimated to kill billions via starvation even among non-combatant nations.
• Even a limited regional nuclear exchange (e.g., South Asia) could reduce global food production by 7–50% (studies by Rutgers University researchers).

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6. Recent Developments (last 12–18 months)

• February 2023: Russia formally suspended (not withdrew from) New START, citing Western military support to Ukraine; halted on-site inspections.
• January 2025: Doomsday Clock moved to 89 seconds to midnight — closest ever — by the Bulletin of Atomic Scientists.
• 2025: Trump administration signalled it would not renew New START and sought a broader deal covering China and non-strategic (tactical) nuclear weapons.
• Late 2025–early 2026: Russia offered to voluntarily maintain New START caps pending new negotiations; US rejected the offer. [1]
• 3 February 2026: Medvedev's public warning about treaty expiry and Doomsday Clock. [1]
• 5 February 2026: New START expires; no successor framework agreed. [1]
• June 2026 (current): No new negotiations announced; both sides proceeding with unconstrained nuclear modernisation programmes.

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7. Prelims Hooks

1. New START was signed on 8 April 2010 in Prague by US President Barack Obama and Russian President Dmitry Medvedev. [1]
2. New START limits each party to 1,550 deployed strategic nuclear warheads — the binding ceiling under the treaty.
3. The treaty entered into force on 5 February 2011 and was extended to 5 February 2026 by the Biden administration in February 2021.
4. Russia suspended (not withdrew from) New START participation in February 2023, citing Western support for Ukraine.
5. The Doomsday Clock is maintained by the Bulletin of Atomic Scientists, founded in 1945; midnight represents global catastrophe.
6. As of January 2025, the Doomsday Clock stood at 89 seconds to midnight — the closest to midnight in its history.
7. New START allowed up to 18 on-site inspections per year per party as a verification mechanism.
8. The INF (Intermediate-Range Nuclear Forces) Treaty was terminated in 2019 after the US withdrew citing Russian violations — a predecessor collapse to New START's expiry.
9. The Treaty on the Prohibition of Nuclear Weapons (TPNW), adopted in 2017, entered into force in January 2021; the US and Russia are non-signatories.
10. New START was the last surviving bilateral strategic arms control treaty between the US and Russia. [1]
11. US and Russia together possess approximately 88% of the world's nuclear warheads.
12. NPT Article VI requires nuclear-weapon states to pursue nuclear disarmament negotiations "in good faith."
13. The Open Skies Treaty — allowing aerial reconnaissance flights — saw the US withdraw in 2020; Russia withdrew in 2021.
14. SORT (Strategic Offensive Reductions Treaty / Moscow Treaty) of 2002 was the immediate predecessor to New START and was superseded by it.
15. New START did not cover tactical (non-strategic) nuclear weapons or hypersonic glide vehicles — a key gap cited by US negotiators seeking a broader deal.

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8. Mains Relevance

GS Paper Mapping

• GS-II: International relations — bilateral treaties, nuclear non-proliferation regimes, global governance of WMDs
• GS-III: Technology — nuclear technology, arms race, strategic weapons systems
• GS-IV (tangentially): Ethical dimensions of nuclear deterrence vs. disarmament

Specific Syllabus Headings

• GS-II: "Bilateral, regional and global groupings and agreements involving India and/or affecting India's interests"; "Important International institutions, agencies and fora"
• GS-III: "Science and Technology — developments and their applications and effects in everyday life"; "Security challenges and their management"

Plausible Mains Question Stems

1. "The expiry of the New START treaty marks the complete collapse of the post-Cold War nuclear arms control architecture. Critically analyse the implications for global strategic stability and India's security environment." (GS-II, 15 marks)
2. "Discuss the significance of bilateral nuclear arms control agreements between the United States and Russia. In what ways does the absence of such a treaty affect non-nuclear weapon states like India?" (GS-II, 10 marks)
3. "The Doomsday Clock advancing to 89 seconds before midnight is a reflection of multiple converging global crises. Examine." (GS-II/GS-III, 15 marks)

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9. Related Topics to Study Next

Topic	Connection
Nuclear Non-Proliferation Treaty (NPT)	Foundational treaty; Article VI disarmament obligation directly challenged by New START's collapse
India's Nuclear Doctrine (NFU, minimum credible deterrence)	India's strategic calculus shifts when US-Russia arms control weakens
Comprehensive Nuclear-Test-Ban Treaty (CTBT)	Not in force (US, China not ratified); part of same disarmament regime under stress
Treaty on Prohibition of Nuclear Weapons (TPNW)	Opposing camp to the superpower deterrence model; gaining normative traction
Russia-Ukraine War and its global fallout	Direct causal link: war triggered Russia's suspension of New START in 2023
China's nuclear modernisation	US insistence on tripartite talks (US-Russia-China) as condition for any successor deal
Hypersonic missiles and strategic stability	New weapons not covered by New START; central to future arms control debates
Doomsday Clock and risk assessment	Prelims-friendly factual topic; links science, ethics, and geopolitics

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10. Common Errors / Trap Areas

1. Confusing "suspended" with "withdrawn": Russia suspended New START participation in Feb 2023 — it did not formally withdraw. The treaty expired by its own terms in 2026, not due to Russian withdrawal.
2. Wrong signatory year: New START was signed in 2010, not 2009 (when START I expired) or 2011 (when it entered into force). Both dates appear in MCQs to trap aspirants.
3. Mixing up treaty warhead limits: New START cap = 1,550 deployed warheads. Do not confuse with START I limits (6,000) or SORT limits (1,700–2,200).
4. Attributing Doomsday Clock to the UN or IAEA: It is maintained by the Bulletin of Atomic Scientists — a private scientific organisation, not a UN body. IAEA and UN have no role in it.
5. Assuming India is affected by treaty limits: New START was strictly bilateral US-Russia; India, China, France, UK, Pakistan are not covered. India's nuclear posture is governed by its own doctrine, not this treaty.
6. Confusing INF Treaty with New START: INF (1987) covered intermediate-range ground-launched missiles; New START covers strategic (long-range) nuclear weapons. Both have now collapsed, but at different times (INF: 2019; New START: 2026).

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