<P> On 13 May 1998, Pakistan bitterly condemned the tests, and Foreign Minister Gohar Ayub was quoted as saying that Indian leadership seemed to "have gone berserk (sic) and was acting in a totally unrestrained way ." Prime Minister Nawaz Sharif was much more subdued, maintaining ambiguity about whether a test would be conducted in response: "We are watching the situation and we will take appropriate action with regard to our security", he said . Sharif sought to mobilise the entire Islamic world in support of Pakistan and criticised India for nuclear proliferation . </P> <P> Prime Minister Nawaz Sharif had been under intense pressure regarding the nuclear tests by President Bill Clinton and Opposition leader Benazir Bhutto at home . Initially surprising the world, Prime Minister Nawaz Sharif authorised nuclear testing program and the Pakistan Atomic Energy Commission (PAEC) carried out nuclear testings under the codename Chagai - I on 28 May 1998 and Chagai - II on 30 May 1998 . These six underground nuclear tests at the Chagai and Kharan test site were conducted fifteen days after India's last test . The total yield of the tests was reported to be 40 kt (see codename: Chagai - I). </P> <P> Pakistan's subsequent tests invited similar condemnation from the United States . American President Bill Clinton was quoted as saying "Two wrongs don't make a right", criticising Pakistan's tests as reactionary to India's Pokhran - II . The United States and Japan reacted by imposing economic sanctions on Pakistan . According to the Pakistan's science community, the Indian nuclear tests gave an opportunity to Pakistan to conduct nuclear tests after 14 years of conducting only cold tests (See: Kirana - I). </P> <P> Pakistan's leading nuclear physicist, Pervez Hoodbhoy, held India responsible for Pakistan's nuclear test experiments in Chagai . </P>

When was the first nuclear test conducted in india