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| 1974 | Gandhi, Indira Nehru |  |
| India becomes the world's 6th nuclear power |
| Pokhran India detonates an underground nuclear weapon |
| 18th May Pokhran India conducts an underground nuclear test at Pokharan in the Rajasthen desert, code named the "Smiling Buddha" |
| 18th May Pokhran India detonates an underground nuclear weapon |
| 1976 | Gandhi, Indira Nehru |  |
| 14th Jan Madras In an address to the Pugwash Conference in Madras Indira Gandhi rebuts criticism of India's 1974 nuclear explosion and says that that India will not give up further experiments in peaceful uses of nuclear energy |
| 1977 | Desai, Morarji Ranchodji |  |
| Shiraz India participates in the International Conference on Trans fer of Nuclear Technology held in Shiraz, Iran. This conference is organized by the Atomic Energy Organization of Iran |
| 24th Mar India's new prime minister, Morarji Desai, addresses his first press conference in which he states that "...the government did not believe in nuclear weapons" and that he doubted "the necessity of peaceful nuclear explosions" |
| April Prime Minister Desai tells a West German interviewer, "I will give it to you in writing that we will not manufacture nuclear weapons. Even if the whole world arms itself with the bombs we will not do so." He also says that if the internal pressure to |
| 20th April Prime Minister Desai says that India will sign the nonproliferation treaty only if present nuclear powers destroy their arsenals. He also holds that India has no nuclear arms and that its technology is devoted to peaceful purposes |
| 16th May Desai declares that if a peaceful nuclear explosion were necessary, India would do it openly, "atomic weapons are no good for defence at all...they can't ever win a war" |
| June The Desai government assents to the safeguards demand demanded by the Soviet Union earlier during the year as a precondition for the supply of heavy water |
| July USAPresident Jimmy Carter sends Deputy Secretary of State Warren Chris topher to India in order to keep the pressure on India to keep its promise to restrain its nuclear weapons program and to engage in the nonproliferation debate |
| Sep The Carter administration explores with India the possibility of purchasing excess spent fuel from Tarapur and returning it to the United States , which was allowed under the 1963 accord, however logistical difficulties & oppostion stops this |
| 22nd Dec Desai continues his rejection of further nuclear explosions when he addresses the Rajya Sabha [upper house] and tells house members that India is committed "not to explode any nuclear device for peaceful purposes or make any nuclear weapons" |
| 1990 | Singh, Vishwanath Pratap |  |
| India & Pakistan begin to mobilize their nuclear weapons at each other |
| 1998 | Vajpayee, Atal Behari |  |
| India and Pakistan conduct nuclear tests |
| India becomes a declared nuclear state |
| India carries out nuclear tests, leading to widespread international condemnation |
| 2002 | Vajpayee, Atal Behari |  |
| Jan India fires a nuclear-capable ballistic missile, the Agni, off its eastern coast |