nuclear programme that started in 1967 prompted Pakistan's clandestine development of nuclear weapons. Although Pakistan began the development of nuclear weapons in 1972, Pakistan responded to India's 1974 nuclear test (see Smiling Buddha) with a number of proposals for a nuclear-weapon-free zone to prevent a nuclear arms race in South Asia. On many different occasions, India rejected the offer. In 1969, after a long negotiation, the United Kingdom Atomic Energy Authority (UKAEA) signed a formal agreement to supply Pakistan with a nuclear fuel reprocessing plant capable of extracting of weapons-grade plutonium annually. PAEC selected a team five senior scientists, including geophysicist Dr. Ahsan Mubarak, who were sent to Sellafield to receive technical training. Later Mubarak's team advised the government not to acquire the whole reprocessing plant, only key parts important to building the weapons, while the plant would be built indigenously. The PAEC in 1970 began work on a pilot-scale plant at Dera Ghazi Khan for the concentration of uranium ores. The plant had a capacity of 10,000 pounds a day. In 1989, Munir Ahmad Khan signed a nuclear cooperation deal and, since 2000, Pakistan has been developing a two-unit nuclear power plant with an agreement signed with China. Both these reactors are of 300 MW capacity and are being built at Chashma city of Punjab province. The first of these, CHASNUPP-I, began producing electricity in 2000, and 'CHASNUPP-II', began its operation in fall of 2011. In 2011, the board of governors of International Atomic Energy Agency gave approval of Sino-Pak Nuclear Deal, allowing Pakistan legally to build the 300-MW 'CHASNUPP-III' and 'CHASNUPP-VI' reactors. Development of nuclear weapons The Bangladesh Liberation War was a defeat for Pakistan, which led to it losing roughly of territory as well as losing more than half its population to the newly independent state of Bangladesh. In addition to the psychological setback for Pakistan, it had failed to gather any significant material support or assistance from its key allies, the United States and the People's Republic of China. Pakistan seemed to be isolated internationally, and in great danger; it felt that it could rely on no one but itself. Prime Minister Zulfiqar Ali Bhutto was "obsessed" with India's nuclear program. At a United Nations Security Council meeting, Bhutto drew comparisons between the Instrument of Surrender that ended the 1971 war, and the Treaty of Versailles, which Germany was forced to sign in 1919. There, Bhutto