End of the New START Treaty: Collapse of US–Russia Nuclear Arms Control

Context

The expiry of the New Strategic Arms Reduction Treaty (New START) in February 2026 marks the end of legally binding limits on nuclear arsenals between the United States and Russia.
This ends over five decades of structured nuclear arms control, raising fears of a renewed arms race, reduced transparency, and weakened strategic stability at a time of heightened global tensions.

Q1. What is the New START Treaty, and why is its expiry considered a major global concern?

1. New START was a bilateral nuclear arms control treaty between the United States and Russia.
2. It capped deployed strategic nuclear warheads and delivery systems.
3. It served as the last remaining binding nuclear arms agreement between the two powers.
4. Its expiry removes all legal ceilings on US and Russian nuclear arsenals.
5. This increases the risk of unchecked nuclear expansion.
6. The loss of verification reduces transparency and trust.
7. The expiry raises fears of a new nuclear arms race.

Q2. How did Cold War arms control efforts begin, and what security fears drove them?

1. During the 1960s, both superpowers rapidly expanded nuclear weapons.
2. The Soviet Union increased its ICBM numbers to match the US.
3. The US feared Soviet anti-ballistic missile systems could enable a first strike.
4. Such systems threatened the balance of mutual deterrence.
5. Both sides realised unlimited arms buildup increased accidental war risks.
6. Strategic stability became a shared interest despite rivalry.
7. This led to negotiations to limit weapons rather than expand them.

Q3. What were the SALT agreements, and why did SALT II fail?

1. SALT talks began in 1969 to curb nuclear competition.
2. SALT I produced the ABM Treaty and limits on missile expansion.
3. The ABM Treaty restricted missile defence systems.
4. SALT II aimed to cap nuclear delivery vehicles at 2,250.
5. It was signed in 1979 but never ratified.
6. The Soviet invasion of Afghanistan derailed US approval.
7. Without ratification, SALT II collapsed.

Q4. How did post–Cold War treaties like START I and START II reshape nuclear arms reduction?

1. START I was signed in 1991 after the Cold War ended.
2. It reduced warheads to 6,000 and delivery systems to 1,600.
3. It required actual destruction of weapons, not just limits.
4. Robust inspections and data exchanges ensured compliance.
5. START II aimed for deeper cuts to 3,000–3,500 warheads.
6. It never entered into force due to political delays.
7. US withdrawal from the ABM Treaty ended START II prospects.

Q5. What role did the Strategic Offensive Reductions Treaty (SORT) play in arms control?

1. SORT was signed in 2002 as a temporary arrangement.
2. It committed both sides to reduce deployed warheads.
3. Targets were set at 1,700–2,200 warheads.
4. Unlike START, SORT lacked strong verification mechanisms.
5. It did not require destruction of weapons.
6. The treaty relied heavily on trust rather than inspections.
7. It served as a bridge until New START was negotiated.

Q6. What were the key features and achievements of the New START Treaty?

1. New START entered into force in 2011.
2. It capped deployed strategic warheads at 1,550.
3. It limited delivery vehicles to 800.
4. This meant significant reductions from earlier levels.
5. Both countries had to dismantle excess systems.
6. The treaty restored predictability after earlier collapses.
7. It reaffirmed commitment to arms control cooperation.

Q7. How did verification and transparency mechanisms under New START enhance stability?

1. Each side could conduct up to 18 on-site inspections annually.
2. Regular data exchanges reduced uncertainty.
3. Satellite monitoring complemented physical inspections.
4. Verification prevented cheating and miscalculations.
5. Transparency reduced fears of surprise attacks.
6. Confidence-building lowered escalation risks.
7. These mechanisms were central to strategic stability.

Q8. What are the immediate consequences of the expiry of New START?

1. All binding limits on US and Russian nuclear forces end.
2. Both countries retain thousands of warheads without legal caps.
3. Verification and inspections cease.
4. Strategic mistrust increases sharply.
5. Risks of misjudgement and accidental escalation rise.
6. Military planners gain incentives to expand arsenals.
7. Arms control norms suffer a serious setback.

Q9. What are the broader global and non-proliferation implications after New START’s end?

1. The collapse weakens the global arms control regime.
2. It undermines the credibility of nuclear restraint.
3. Other nuclear powers may feel less pressure to limit arsenals.
4. The Nuclear Non-Proliferation Treaty review process is affected.
5. Strategic competition replaces cooperative security.
6. Smaller states may reconsider nuclear ambitions.
7. Even limited restraint is safer than unregulated rivalry.

Conclusion

The expiry of the New START Treaty represents a historic rupture in global nuclear governance.
With no legal limits, reduced transparency, and rising geopolitical tensions, the world enters a more dangerous nuclear era.
For international security, reviving arms control—however imperfect—remains far safer than allowing unconstrained nuclear competition.