21 Brutal Dictators of the 20th Century Posted on September 18, 2016November 11, 2017 by TFE Times Prev17 of 21Next Yahya Khan Agha Muhammad Yahya Khan (4 February 1917 – 10 August 1980), widely known as Yahya Khan, NePl, was the third President of Pakistan, serving in this post from 25 March 1969 until turning over his presidency in December 1971. His presidency witnessed the breaking-up the unity of Pakistan from being the largest Muslim country in the world to economic and military collapse through a foreign intervention in 1971. Related