The Administrative Committee on Coordination was established per the Economic and Social Council’s resolution 13 (III) of 21 September 1946 “for the purpose of taking all appropriate steps, under the leadership of the Secretary-General, to ensure the fullest and most effective implementation of the agreements entered into between the United Nations and the specialized agencies.” The Secretary-General acted as Chairman of the ACC. Other members were the executive heads of the specialized agencies and the International Atomic Energy Agency (IAEA).