Changing Global Nuclear Deterrence Architecture

Syllabus: Effect of policies and politics of developed and developing countries on India’s interests.

Context and Strategic Trigger

  • Recent rift between Europe and the U.S. has shaken NATO’s internal cohesion.
  • Dispute linked to U.S. position over Greenland, a Danish territory.
  • Europe’s trust in the U.S. as security guarantor has weakened.
  • Occurs alongside expiry of key nuclear arms control frameworks.

NATO’s Traditional Nuclear Role

  • NATO formed in 1949 as a defensive nuclear alliance.
  • Designed to counter the Soviet Union’s strategic threat.
  • The U.S. functioned as the principal nuclear security provider.
  • Alliance credibility historically depended on mutual trust.

Implications of Alliance Rupture

  • U.S. unilateralism has hollowed NATO’s nuclear credibility.
  • Europe now reassessing its independent security architecture.
  • Future deterrence models may shift significantly.
  • Could redefine global nuclear security debates.

Evolution of Nuclear Deterrence Thinking

  • Nuclear deterrence shaped by Nuclear Non-Proliferation Treaty (NPT) framework.
  • NPT institutionalised divide between nuclear and non-nuclear states.
  • Security threats have diversified beyond nuclear rivalry.
  • Includes terrorism, climate change, inequality and regional conflicts.

Certainty vs Uncertainty in Deterrence

  • Early nuclear debates focused on deterrence psychology.
  • Uncertainty doctrine relied on ambiguity of nuclear response.
  • India–Pakistan deterrence (1980s–1998) reflected this model.
  • Israel’s opaque nuclear posture also reflects uncertainty deterrence.
  • Major powers emphasised certainty deterrence through stockpiles and testing.
  • Arsenal size signalled intent and retaliatory capability.

Nuclear Taboo and Arms Control

  • No nuclear weapon used since 1945.
  • Normative taboo on nuclear use strengthened globally.
  • Arms control treaties reduced U.S.–Russia stockpiles.
  • Yet doctrinal thinking on deterrence remained unchanged.

Renewed Nuclear Modernisation

  • U.S., Russia and China modernising nuclear arsenals.
  • China reportedly adding 100 warheads annually since 2023.
  • U.K. reversed stockpile reduction; now around 225 warheads.
  • New START Treaty expiry may trigger renewed arms race.

Lessons from Ukraine War

  • Russia issued nuclear threats during Ukraine conflict.
  • Deterrence worked through conventional response certainty.
  • Ukraine, though non-nuclear, resisted nuclear adversary.
  • Highlights limits of nuclear weapons in modern warfare.

Europe’s Emerging Security Choices

  • Europe exploring post-U.S. defence frameworks.
  • France and U.K. nuclear umbrella proposals discussed.
  • “Coalition of the Willing” formed to support Ukraine.
  • Future architecture may blend nuclear and conventional deterrence.

Strategic Significance

  • Europe’s choices may reshape global nuclear doctrine.
  • Could redefine role of nuclear weapons in security.
  • Signals potential transition from Cold War deterrence logic.

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