What is the common examiner trap about Intl. Relations in UPSC exams?

They will swap the stockpile numbers between the U.S. and Russia (5,277 vs 5,459). They may also confuse the 'Coalition of the Willing' (2026, for Ukraine) with the 'Coalition of the Willing' from the 2003 Iraq War. Another trap is stating the NPT prevents 'vertical' proliferation (increase in stockpiles by nuclear states); it primarily addresses 'horizontal' proliferation (spread to new states).

What should UPSC aspirants remember about Intl. Relations for Prelims?

1. Target this Date: New START Treaty expiry on February 5, 2026. 2. Target this Data: U.S. (5,277) and Russian (5,459) nuclear stockpile numbers as of 2026. 3. Target this Concept: The difference between deterrence based on 'certainty' vs. 'uncertainty' of nuclear response.

International RelationsDefence & Security

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News 7 of 7

NATO Trust Rupture Over Greenland Shapes Europe's Nuclear Deterrence Post-New START Expiry on February 5, 2026

Q: The New START Treaty, recently in news for its expiry, is a bilateral arms control agreement between which two countries?

U.S. and Russia, The New Strategic Arms Reduction Treaty (New START) is a pact between the United States and the Russian Federation. It is the last remaining major nuclear arms control treaty limiting the strategic arsenals of the world's two largest nuclear powers.

Q: Consider the following statements regarding nuclear deterrence as discussed in the article: 1. Deterrence based on 'uncertainty' means an adversary cannot be sure that adventurism will not meet a nuclear response. 2. The war in Ukraine demonstrates that deterrence against a nuclear state requires the certainty of a nuclear counter-response. 3. The Nuclear Non-Proliferation Treaty (NPT) successfully prevented horizontal proliferation but not vertical proliferation. Which of the statements given above is/are correct?

Both 1 and 3, Statement 1 is correct: Uncertainty-based deterrence, as practiced by India-Pakistan (pre-1998) and Israel, relies on an opaque posture. Statement 2 is incorrect: Ukraine's case shows robust conventional response (certainty) can deter, even with unclear nuclear posture. Statement 3 is correct: The NPT curbed spread to new states (horizontal) but allowed existing nuclear states to modernize and increase arsenals (vertical).

Q: As per the article, what is the reported approximate nuclear warhead stockpile of the United States as of 2026?

5,277, The article explicitly states the U.S. stockpile is 5,277 warheads. Option C (5,459) is the Russian stockpile, making it a classic examiner trap. Options A and D are close but incorrect distractors.

Q: The article suggests the crisis in NATO and the Ukraine war could lead to a major shift in nuclear deterrence thinking. What is the primary implication of this potential shift?

It may decouple European security from sole reliance on U.S. nuclear guarantees and prompt a re-evaluation of deterrence beyond nuclear threats., The core argument of the article is that the rupture in NATO trust and Ukraine's experience are catalysts for Europe to build an independent security architecture. This process forces a rethink of whether deterrence must always be nuclear-centric or can be achieved through other means, updating Cold War-era doctrines.

Intl. Relations Security & DefenceSUPPORT

Target:UPSC GS-IIMPSCPrelims MediumMains High

04 Feb 2026

~2 min

Source: The Hindu

Key Data:February 5, 2026100 warheads a year since 2023600 total warheads225 warheads5,459 warheads5,277 warheads

Bodies:NATO

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~2 min · Quick mode

What This Article Covers

1.The 'Coalition of the Willing' summit on January 6, 2026, highlighted Europe's search for security guarantees for Ukraine, independent of a U.S. perceived as unreliable under Trump.

2.The New START treaty, the last pact limiting U.S. and Russian nuclear arsenals, expires on February 5, 2026, potentially triggering a new arms race and a return to Cold War deterrence models.

3.The Ukraine war challenges traditional deterrence theory by showing a non-nuclear state can resist a nuclear adversary, suggesting deterrence may rely on robust conventional response certainty rather than nuclear threat uncertainty.

The Big Picture

Prelims · MediumMains · High

The rupture of trust within NATO, combined with the expiry of the last U.S.-Russia nuclear arms control treaty, marks a pivotal moment in global security. This crisis forces a re-evaluation of Cold War-era nuclear deterrence doctrines, especially in light of Ukraine's non-nuclear defence against a nuclear-armed Russia. The future security architecture of Europe will determine if deterrence thinking is updated or remains ossified.

Exam Lens

Quick Exam Facts From News

New START ExpiryFebruary 5, 2026

Coalition of the Willing SummitJanuary 6, 2026

U.S. Nuclear Stockpile (2026)5,277 warheads

Russian Nuclear Stockpile (2026)5,459 warheads

China's Warhead Count (2026)600 (adding ~100/year since 2023)

U.K. Warhead Count (2026)225 (reversed 2006 reduction decision in 2015)

1-Minute Revision

›New START Expiry: February 5, 2026
›Coalition of the Willing Summit: January 6, 2026
›Target this Date: New START Treaty expiry on February 5, 2026.
›Target this Data: U.S. (5,277) and Russian (5,459) nuclear stockpile numbers as of 2026.
›Target this Concept: The difference between deterrence based on 'certainty' vs. 'uncertainty' of nuclear response.

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News Snapshot

⚔️

NATO Trust Fractured

U.S.-Europe relations within NATO have been irreparably damaged over the Greenland dispute, hollowing out the alliance's credibility as a nuclear security guarantor.

💣

Arms Control Void

The expiry of New START removes the final constraint on U.S.-Russian nuclear arsenals, risking a new arms race as both nations modernize their stockpiles.

🛡️

Deterrence Redefined

Ukraine's defence suggests effective deterrence against a nuclear power may stem from the certainty of a robust conventional response, not just nuclear retaliation threats.

Detailed Analysis & Strategic Depth

Context / Background

NATO, formed in 1949 as a U.S.-guaranteed nuclear alliance against the USSR, faces an existential crisis. The Trump administration's pressure on Denmark over Greenland shattered intra-alliance trust. Concurrently, the global nuclear non-proliferation regime, anchored by the NPT (1968), has restrained horizontal spread but not vertical modernization. The conceptual debate on deterrence—whether it rests on certainty or uncertainty of nuclear response—has remained stagnant since the Cold War.

Core Analysis & Implications

The article argues nuclear deterrence theory is at a turning point. First, the Ukraine war provides a counter-narrative: a non-nuclear state, with external support, can resist a nuclear-armed aggressor, challenging the axiom that nuclear weapons are the ultimate security guarantee. Second, the collapse of U.S.-Russia arms control (New START expiry) and ambitious nuclear modernization by China, Russia, and the U.S. signal a potential regression to dangerous Cold War postures. Third, Europe's forced strategic autonomy could lead to a new security architecture, possibly a European nuclear alliance or a conventionally-focused defence pact, reshaping global nuclear politics.

Future Outlook / Way Forward

Europe's response in the coming months is critical. Will it pursue a 'nuclear alliance 2.0' potentially led by France and the U.K., or prioritize conventional defence with a latent nuclear element? This choice will either update deterrence thinking for 21st-century threats (like climate change, terrorism) or cement outdated Cold War logic. The 'Coalition of the Willing' model for Ukraine may be a precursor. Globally, the risk is a multi-polar nuclear arms race without dialogue frameworks, increasing the chance of miscalculation.

Key Facts at a Glance

New START ExpiryFebruary 5, 2026

Coalition of the Willing SummitJanuary 6, 2026

U.S. Nuclear Stockpile (2026)5,277 warheads

Russian Nuclear Stockpile (2026)5,459 warheads

China's Warhead Count (2026)600 (adding ~100/year since 2023)

U.K. Warhead Count (2026)225 (reversed 2006 reduction decision in 2015)

You've read the full analysis. Now test your understanding.

Practice exam-style questions based on this article.

Q1Static LinkageEasyUPSC, SSC, Banking

The New START Treaty, recently in news for its expiry, is a bilateral arms control agreement between which two countries?

Q2Statement-basedHardUPSC, SSC

Consider the following statements regarding nuclear deterrence as discussed in the article:

1. Deterrence based on 'uncertainty' means an adversary cannot be sure that adventurism will not meet a nuclear response.

2. The war in Ukraine demonstrates that deterrence against a nuclear state requires the certainty of a nuclear counter-response.

3. The Nuclear Non-Proliferation Treaty (NPT) successfully prevented horizontal proliferation but not vertical proliferation.

Which of the statements given above is/are correct?

Q3Data-centricMediumUPSC, Banking

As per the article, what is the reported approximate nuclear warhead stockpile of the United States as of 2026?

Q4Application/ImpactMediumUPSC, SSC, Banking

The article suggests the crisis in NATO and the Ukraine war could lead to a major shift in nuclear deterrence thinking. What is the primary implication of this potential shift?

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NATO Trust Rupture Over Greenland Shapes Europe's Nuclear Deterrence Post-New START Expiry on February 5, 2026

Exam Lens

Quick Exam Facts From News

1-Minute Revision

News Snapshot

NATO Trust Fractured

Arms Control Void

Deterrence Redefined

Detailed Analysis & Strategic Depth

Context / Background

Core Analysis & Implications

Future Outlook / Way Forward

Prelims Flashpoints

Key Facts at a Glance