General Agha Mohammad Yahya Khan oversaw the 1970 Elections in Pakistan, the results of which exposed the deep fractures between East and West Pakistan resulting in insurgency in Bengal. Yahya Khan's crack down of Bengalis left the country permanently divided when war broke out and after a poorly mismanaged war the Pakistan army surrendered. Violent demonstrations against the military government soon broke out at the news of Pakistan's defeat. Yahya Khan resigned on December 20, 1971.
Agha Muhammad Yahya Khan (Urdu: آغا محمد یحیی خان, Bengali: জেনারেল ইয়াহিয়া খান February 1917 – 10 August 1980), popularly known as Yahya Khan was a four-star general and statesman who served as the third President of Pakistan from 1969 until the fall of East-Pakistan as a follow-up to Pakistan's defeat in the war with India in 1971. Serving with distinction in World War II as a British Indian Army officer, Yahya opted for Pakistan in 1947 and held critical command assignments.