In 1962, the second set of the Constitution completely dissolved the office of prime minister as all powers were transferred to the President of Pakistan. Criticism over the presidency after the presidential election held in 1965 over the centralizing of powers. After the general elections held in 1970, the office was established with Nurul Amin becoming the Prime Minister who was also the Vice-President. Negotiations that fall apart between Zulfikar Ali Bhutto, Mujibur Rehman, and Yahya Khan that prompted to liberation movement in the East Pakistan. With India intervening in East Pakistan and Pakistan conceding defeat to end the war led to the collapse of the presidential system in 1971.