India's Nuclear Tests — Pokhran-II

On May 11, 1998, India conducted three simultaneous underground nuclear tests at the Pokhran test range in the Rajasthan desert, followed by two more on May 13. The tests — codenamed Operation Shakti — included a thermonuclear (hydrogen bomb) device, a fission device, and three sub-kiloton tactical weapons. Prime Minister Atal Bihari Vajpayee declared: "India is now a nuclear weapons state." The tests were a technological and intelligence triumph: despite the United States' sophisticated satellite surveillance, the CIA failed to detect preparations, leading to a major review of American intelligence capabilities. India had conducted its first nuclear test in 1974 (Pokhran-I, officially a "peaceful nuclear explosion" under Indira Gandhi), but Pokhran-II was qualitatively different — it was an unambiguous declaration of nuclear weapons capability. The international response was swift: the United States, Japan, and other nations imposed economic sanctions. Pakistan responded 17 days later with its own nuclear tests at Chagai Hills, creating a nuclear-armed confrontation over the disputed territory of Kashmir. The 1998 tests ended India's nuclear ambiguity, triggered a nuclear arms race in South Asia, and eventually led to the India-U.S. Civil Nuclear Agreement of 2008.