In the Indo-Pakistani War of 1965, which was the second of four openly declared Indo-Pakistani wars and conflicts, Pakistan solicited Central Treaty Organization (CENTO) assistance, but came under arms supply embargo in United Nations Security Council Resolution 211. Foreign minister (later Prime minister) Zulfikar Ali Bhutto aggressively began the advocating the option of "nuclear weapons programmes" but such attempts were dismissed by Finance minister Muhammad Shoaib and chairman Ishrat Hussain Usmani. Pakistani scientists and engineers' working at IAEA became aware of advancing Indian nuclear program towards making the bombs. Therefore, In October 1965, Munir Khan, director at the Nuclear Power and Reactor Division of the International Atomic Energy Agency (IAEA), met with Bhutto on an emergency basis in Vienna, revealing the facts about the Indian nuclear programme and Bhabha Atomic Research Centre in Trombay. At this meeting Munir Khan concluded: "a (nuclear) India would further undermine and threaten Pakistan's security, and for her survival, Pakistan needed a nuclear deterrent...".