No first use explained: what India's nuclear pledge says, and why it wants a treaty

What did India say at the UN this week?

That it is ready to put its no-first-use pledge into a legally binding international agreement.

Speaking for India at the First Committee of the UN General Assembly, which deals with disarmament, Congress MP Manish Tewari said India was willing to make both its no-first-use commitment and its promise not to use nuclear weapons against non-nuclear-weapon states part of a multilateral legal arrangement. He also said that as artificial intelligence enters military command systems, decisions on using nuclear weapons must remain under human control.

The offer is not new. It restates one of the oldest planks of India’s position on nuclear weapons. What it rests on is a short official statement now more than two decades old.

What does “no first use” mean?

That India will never be the first to use nuclear weapons in a conflict, and will use them only in retaliation for a nuclear attack.

The policy was set out when the Cabinet Committee on Security (CCS) reviewed India’s nuclear doctrine and made its main points public on 4 January 2003. It says nuclear weapons will be used only in retaliation against a nuclear attack on Indian territory or on Indian forces anywhere.

The same statement fixes the scale of any response. Retaliation to a first strike “will be massive”, designed to inflict unacceptable damage. No first use is meant to be paired with a threat large enough to make a first strike on India unthinkable.

What is credible minimum deterrence?

The idea that India needs only as many nuclear weapons as it takes to make that threat believable, not an arsenal to match the largest powers.

It is the first point in the 2003 doctrine. India’s forces must be able to survive an attack and strike back, but the doctrine does not commit the country to an arms race. That is why India’s statements at the UN keep coupling no first use with calls for universal, non-discriminatory and verifiable disarmament.

India's nuclear doctrine, as set out in January 2003

• No first use retaliation onlyNuclear weapons only in response to a nuclear attack on India or Indian forces anywhere.
• Massive scale of responseRetaliation to a first strike is designed to inflict unacceptable damage.
• Non-use against non-nuclear statesNo nuclear use against countries that do not have nuclear weapons.
• PM-led who decidesOnly the Political Council of the Nuclear Command Authority can authorise use.

Are there exceptions?

One that matters: India keeps the option of a nuclear response to a major biological or chemical weapons attack.

The doctrine bars nuclear use against non-nuclear-weapon states. But it also says that if India, or Indian forces anywhere, face a major attack with biological or chemical weapons, India retains the option of retaliating with nuclear weapons.

Who can order a nuclear strike?

Only the civilian political leadership, through the Political Council of the Nuclear Command Authority, chaired by the Prime Minister.

The 2003 statement describes the authority as having two parts. The Political Council is “the sole body which can authorise the use of nuclear weapons”. An Executive Council, chaired by the National Security Advisor, gives it advice and carries out its directives. The CCS also approved a Commander-in-Chief of a Strategic Forces Command to manage India’s strategic forces, and alternate chains of command so that a retaliatory strike could still be ordered in any situation.

That structure is the background to Tewari’s point about AI. If a machine were allowed to recommend or trigger a launch, the chain from an elected leader to a weapon would change. India’s position is that a human must stay in charge of that decision.

What else does the doctrine commit India to?

Restraint on testing and trade. The 2003 statement promises strict export controls on nuclear and missile materials and technology, India’s participation in negotiations on a Fissile Material Cut-off Treaty, and a continued moratorium on nuclear tests. At the UN this week India also repeated two older proposals: taking nuclear weapons off high alert, and an international convention that would ban the use or threat of use of nuclear weapons.

Why would India want a treaty?

Because a pledge only India makes binds India alone.

A multilateral no-first-use agreement would ask every nuclear-armed state to give the same promise and accept it as law. India argues that this would lower the risk of nuclear war without requiring any country to give up its weapons first. For such a treaty to mean anything, the other nuclear powers would have to sign it, and no negotiations on such a treaty have been announced. As of October 2026 the offer remains what it has long been: a statement of where India stands, and an invitation others have yet to take up.