Russia sounds alarm as New START treaty is set to expire

New START Treaty Expiry — UPSC Study Note

1. At a Glance

• New START (Treaty on Measures for the Further Reduction and Limitation of Strategic Offensive Arms) was the last remaining bilateral nuclear arms-control treaty between the United States and Russia, the two states possessing ~90% of global nuclear warheads. [S1]
• It expired on 5 February 2026, leaving the world — for the first time in more than half a century — without any binding limits on US and Russian strategic nuclear arsenals. [S1][S2]
• Russia had offered a one-year extension; the US under President Trump did not formally respond in time, causing the treaty to lapse. [S3]
• Critical for GS-II (International Relations / Security) and GS-III (Nuclear Security / Internal Security backdrop). [S1]

2. Why in the News

• 5 February 2026: New START expired without renewal, drawing a UN Secretary-General warning of a "grave moment" for international peace. [S1][S2]
• 4 February 2026: Kremlin spokesperson Dmitry Peskov declared the world was entering a "dangerous position" as Russia awaited a US response to its one-year extension offer. [S3]
• Russia simultaneously launched a major drone-and-missile barrage on Ukraine (~450 drones, ~70 missiles) a day before scheduled US-brokered peace talks, intensifying the geopolitical backdrop. [S3]
• February 2025: Russia had suspended its participation in New START inspections (2023) and formally suspended obligations (February 2023), citing NATO arms supplies to Ukraine. [S4]

3. Background & Evolution

Cold War Arms-Control Lineage (Chronological):

[S1][S2][S4]

4. Core Static Facts

Treaty Mechanics: - Full name: Treaty on Measures for the Further Reduction and Limitation of Strategic Offensive Arms - Signed: 8 April 2010, Prague - Entry into force: 5 February 2011 - Original duration: 10 years (to 2021); extendable up to 5 more years - Extended: February 2021 (Biden-Putin, full 5-year extension) - Expiry: 5 February 2026 [S1][S2]

Key Limits (per side): - Deployed strategic warheads: ≤ 1,550 [S1] - Deployed and non-deployed delivery vehicles (total launchers + bombers): ≤ 800 [S1] - Deployed ICBMs, SLBMs, and nuclear-armed bombers: ≤ 700 [S1]

Verification Regime: - Bilateral data exchanges, notifications, and on-site inspections [S1] - Up to 18 on-site inspections per year per side (suspended by Russia, Feb 2023)

Key Parties & Institutions: - Parties: USA and Russian Federation only - Custodian/witness forum: None (bilateral); NPT Review Conferences provide broader context - Oversight body referenced: UN Office for Disarmament Affairs (UNODA)

Predecessor treaties subsumed: START I, SORT (Moscow Treaty)

5. Multi-Dimensional Analysis

Geopolitical / Strategic

• Expiry creates a verification vacuum: neither side is now obligated to share data on warhead numbers, missile deployments, or bomber bases. [S1]
• Combined US-Russia arsenals (~12,000+ warheads total) now have no binding ceiling, incentivising potential arms race dynamics. [S1]
• Russia's suspension of inspections (2023) pre-empted the treaty's practical utility even before formal expiry; geopolitical trust eroded by the Ukraine war is the root cause. [S3]
• China — the third-largest nuclear power (~500 warheads, growing) — was never party to New START; US had pushed for trilateral inclusion, which Russia and China resisted. [S4]
• India's strategic calculus: Pakistan and China are not constrained by any equivalent bilateral treaty; New START's collapse weakens the global norm for arms-control diplomacy. [S2]

Legal / Constitutional (International Law Dimension)

• New START was a binding treaty under international law (VCLT); its expiry does not violate law but removes treaty obligations. [S2]
• The NPT (Article VI) obliges nuclear-weapon states to pursue "good faith" disarmament negotiations — New START's lapse arguably weakens NPT credibility. [S1]
• The Comprehensive Nuclear-Test-Ban Treaty (CTBT) has still not entered into force (8 Annex-2 states yet to ratify); New START expiry compounds the disarmament regime's weakness. [S1]

Historical

• Last time there were no bilateral nuclear limits was the pre-SALT I era (pre-1972), i.e., over 50 years ago. [S1]
• The Cold War arms race peaked at ~70,000 combined warheads (1986); START I/II/New START reduced this to ~12,000. [S4]
• Trump withdrew the US from the INF Treaty in 2019 and the Open Skies Treaty in 2020, meaning New START was already the sole surviving bilateral instrument. [S3]

Ethical / Governance

• UN SG António Guterres called the expiry "a moment of grave concern" and urged both powers to return to nuclear arms-control dialogue. [S1][S2]
• Global civil-society organisations (ICAN — Nobel laureate 2017) argue the lapse violates the spirit of the Treaty on the Prohibition of Nuclear Weapons (TPNW, 2017). [S2]
• Transparency and accountability deficit: without verification protocols, third countries and international watchdogs lose visibility into the world's two largest arsenals.

Scientific / Technological

• ICBMs (Intercontinental Ballistic Missiles), SLBMs (Submarine-Launched), and strategic bombers were the three delivery vectors capped. [S1]
• Russia's Sarmat (RS-28) ICBM, Poseidon nuclear-powered torpedo, and Avangard hypersonic glide vehicle — new systems whose counting rules under a successor treaty remain undefined. [S1]
• US B-21 Raider bomber and next-generation Sentinel ICBM (replacing Minuteman III) are under development; their treaty status was unresolved. [S4]

6. Recent Developments (Last 12–18 months)

• February 2023: Russia formally suspended New START participation, citing NATO weapons supplies to Ukraine; stopped allowing US inspections. [S4]
• September 2025: Trump said extension of New START "sounds like a good idea" but took no formal action. [S3]
• August 2025: Trump–Putin meeting at Joint Base Elmendorf-Richardson, Alaska — New START reportedly discussed but no agreement reached. [S3]
• Late 2025: Russia formally offered a one-year extension of the treaty; US did not respond formally. [S3]
• 4 February 2026: Kremlin's Peskov issues public warning; Russia launches 450 drones + 70 missiles on Ukraine the same night. [S3]
• 5 February 2026: Treaty expires; UN SG issues statement calling for immediate return to arms-control talks. [S1][S2]
• 6 February 2026: US-brokered Ukraine peace talks scheduled (context of Russia-Ukraine war continues). [S3]

7. Prelims Hooks

1. New START stands for Treaty on Measures for the Further Reduction and Limitation of Strategic Offensive Arms. [S1]
2. New START was signed on 8 April 2010 in Prague by US President Obama and Russian President Medvedev. [S4]
3. The treaty entered into force on 5 February 2011 and expired exactly 15 years later on 5 February 2026. [S1]
4. New START capped deployed strategic warheads at 1,550 per side. [S1]
5. Total nuclear delivery vehicles (deployed + non-deployed) were capped at 800 per side. [S1]
6. Deployed ICBMs, SLBMs, and heavy bombers combined were capped at 700 per side. [S1]
7. The treaty was extended for 5 years in February 2021 — the maximum permissible extension under its own text. [S2]
8. Russia suspended its New START obligations in February 2023, citing NATO arms supplies to Ukraine. [S4]
9. The INF Treaty — which New START did not replace — was withdrawn from by the US in 2019. [S3]
10. China was never a party to New START despite being the third-largest nuclear power. [S4]
11. New START's expiry is the first time in over 50 years (since pre-SALT I, 1972) that there are no binding US-Russia nuclear warhead limits. [S1]
12. The UN Secretary-General described New START's expiry as a "grave moment" for international peace and security. [S2]
13. Verification under New START included up to 18 on-site inspections per year per side. [S1]
14. The Treaty on the Prohibition of Nuclear Weapons (TPNW) — the other major nuclear treaty — entered into force in January 2021 but was not signed by any nuclear-weapon state. [S2]
15. Predecessor to New START was SORT (Strategic Offensive Reductions Treaty / Moscow Treaty, 2002). [S4]

8. Mains Relevance

GS Paper mapping: - GS-II: International Relations — bilateral/multilateral agreements, India's foreign policy in a changing global order, nuclear-weapon states and disarmament. - GS-III: Internal Security — nuclear security, arms race implications for India's neighbourhood threat perceptions.

Specific syllabus headings: - "Important International Institutions, agencies and fora — their structure, mandate" (NPT, CTBT, New START) - "Bilateral, regional, and global groupings and agreements involving India and/or affecting India's interests" - "Effect of policies and politics of developed and developing countries on India's interests"

Plausible Mains Questions: 1. "The expiry of the New START Treaty marks the end of an era of US-Russia nuclear arms control. Examine the implications of this development for global nuclear security and India's strategic interests." (250 words, GS-II) 2. "Trace the evolution of nuclear arms-control treaties from SALT I (1972) to New START (2010). What structural weaknesses prevented the development of a comprehensive multilateral nuclear disarmament regime?" (250 words, GS-II) 3. "In the absence of binding nuclear arms-control treaties, how should multilateral bodies like the United Nations strengthen the global non-proliferation architecture?" (150 words, GS-II)

9. Related Topics to Study Next

10. Common Errors / Trap Areas

1. Confusing START I with New START: START I (1991, US–USSR) expired in December 2009; New START (2010) is the successor. They are different treaties with different limits.
2. Wrong expiry year: Some aspirants mix up the 2021 extension date with the actual expiry. The treaty was extended in 2021 but expired in 2026.
3. Assuming China is a party: New START was strictly bilateral (US-Russia); China, UK, and France were never parties, despite being NPT-recognised nuclear-weapon states.
4. Conflating SORT and New START: SORT (Moscow Treaty, 2002) limited warheads to 1,700–2,200 but had no verification mechanism; New START replaced it with stricter limits (1,550) and a robust inspection regime.
5. Assuming NPT = disarmament obligation enforcer: NPT Article VI calls for "good faith negotiations" but provides no enforcement mechanism; New START was the operational disarmament tool. Its expiry weakens NPT's practical meaning but does not violate NPT itself.

11. Sources

• [S1] As New Strategic Arms-Reduction Treaty Expires, Secretary-General Warns of Grave Moment — https://press.un.org/en/2026/sgsm23007.doc.htm — (Tier 2: UN)
• [S2] Statement by the Secretary-General on Expiration of New START Treaty, 5 February 2026 — https://www.un.org/sg/en/content/sg/statements/2026-02-05/statement-the-secretary-general-the-occasion-of-the-expiration-of-the-treaty-measures-for-the-further-reduction-and-limitation-of-strategic-offensive-arms-(new-start) — (Tier 2: UN)
• [S3] Russia sounds alarm as New START treaty is set to expire — The Hindu (Article excerpt, 4 February 2026, Page 14, International Edition) — https://www.thehindu.com/todays-paper/2026-02-04/th_international/articleGVDFHLQIK-13366625.ece — (Tier 4: The Hindu)
• [S4] Strategic Arms Reduction Talks (START) — Britannica — https://www.britannica.com/event/Strategic-Arms-Reduction-Talks — (Tier 3: Britannica)