Reference Article: Editorial | The Hindu – New beginnings: On the end of START as opportunity
UPSC Relevance:
GS Paper II – International Relations (Arms control, Nuclear diplomacy, Major power relations)
GS Paper III – Security (Nuclear deterrence, Non-proliferation regime)
On February 5, 2026, the ‘New’ Strategic Arms Reduction Treaty (START) between the U.S. and Russia expired. Its lapse marks the end of the last remaining bilateral treaty limiting the world’s two largest nuclear arsenals, raising concerns about a renewed nuclear arms race.
Evolution of START
The treaty was rooted in Cold War arms control efforts between the U.S. and the Soviet Union.
- By the 1980s, both sides possessed over 10,000 strategic nuclear warheads each.
- Earlier agreements like the Strategic Arms Limitations Talks (SALT) capped numbers but did not mandate reductions.
- START I (signed in 1991) was the first treaty to require actual reductions — limiting each side to 6,000 strategic warheads.
- Subsequent agreements reduced deployed warheads further.
- The New START (2010) capped deployed strategic warheads at 1,550 per side and provided verification mechanisms.
New START symbolised a shift from unrestrained accumulation to structured, verifiable reductions.
Significance of Expiry
The treaty’s expiration leaves no legally binding cap on U.S.–Russia strategic nuclear forces.
- Removes transparency and verification mechanisms.
- Opens space for renewed arms build-up amid deteriorating geopolitical trust.
- Signals weakening of cooperative security frameworks.
- Reflects broader geopolitical regression towards power politics and competitive militarisation.
China Factor and Emerging Dynamics
U.S. President Donald Trump has argued that future arms control must include China due to its expanding nuclear capabilities. This introduces new complexities:
- China’s arsenal, though smaller than U.S. and Russian stockpiles, is growing.
- The U.S. may resist unilateral constraints if other major powers expand unchecked.
- Multilateralising arms control could either modernise the framework or stall negotiations altogether.
Implications for Global Non-Proliferation Regime
The expiry of START could affect broader regimes:
- Treaty on the Non-Proliferation of Nuclear Weapons (NPT): Already criticised for being discriminatory between nuclear and non-nuclear states.
- Comprehensive Nuclear-Test-Ban Treaty (CTBT): Yet to enter into force; momentum could weaken further.
Without superpower leadership in reductions, the moral and political foundation of global non-proliferation efforts may erode.
Way Forward
The end of New START can also be seen as an opportunity:
- To revisit arms control on more equitable and multilateral terms.
- To incorporate emerging nuclear powers into new frameworks.
- To rebuild verification and transparency mechanisms suited to 21st-century geopolitics.
Absent renewed dialogue, strategic instability and arms-race doctrines may return, increasing risks of miscalculation.
Sample UPSC Mains Question
The expiry of the New START Treaty marks a critical juncture in global nuclear arms control. Discuss its implications for strategic stability and the future of the global non-proliferation regime.