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18 May 1974; further tests 1998General source · 2 sourcesWell documented

India Tests the Bomb and Becomes a Nuclear Power

A 1974 blast called peaceful and a 1998 series of tests that ended the pretense

On the timeline · around 18 May 1974; further tests 1998 · Independent IndiaIndependent IndiaIndia Tests the Bomb and Becomes a Nuclear Power1960196519701975198019851990

Quick facts

First test
18 May 1974, code-named Smiling Buddha
Site
Pokhran, Rajasthan
1998 tests
Five, on 11 and 13 May 1998
Result
India declared a nuclear weapons state

What happened

On May 18, 1974, the Arms Control Association records, India for the first time detonated a nuclear device at the Pokhran testing site, code-named Smiling Buddha. Its leaders claimed they needed this explosive capability for peaceful purposes, such as earth-moving operations, mining, and canal digging. The test, as Global Zero notes, marked India's new status as the seventh country to develop its own nuclear weapon, and it drove the creation of the Nuclear Suppliers Group to police nuclear exports. India kept its capability ambiguous for a generation, then dropped the ambiguity: India conducted five nuclear weapons tests on May 11 and 13, 1998, and declared India a nuclear weapons state. Neighbouring Pakistan tested its own weapons weeks later.

Why it matters

India's tests made South Asia a nuclear region and put nuclear weapons in the hands of two states that had already fought several wars and still dispute Kashmir. The 1974 blast also reshaped the global nonproliferation system, prompting the export controls that still govern nuclear trade.

How we know

The 1974 and 1998 tests, their code names, and India's declaration as a nuclear weapons state are documented by the Arms Control Association and the disarmament organization Global Zero, drawing on the public record and Indian government statements.

Sources

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