Karachi The Chairman, Pakistan Institute of International Affairs (PIIA) and a former student leader Fatahyab Ali Khan who was critically ill and admitted at the Aga Khan University Hospital passed away on Sunday. Fatehyab Ali Khan was a student leader and a debater par excellence of yesteryear. He was amongst the 12 student leaders externed from Karachi in 1962 during the era of military dictator Gen. Ayub Khan. They were dubbed as “bara imam”. Amongst those who were externed by Ayub included Fatehyab Ali Khan, Husain Naqi, Syed Saeed Hasan, Aga Jafar, Nafees Siddiqi, Jauhar Husain, Wahid Bashir, Amir Hyder Kazmi, Mairaj Mohammad Khan and Syed Ali Mukhtar Rizvi. Fatehyab, a very handsome student leader was the first president of Karachi University Students’ Union. Previously the highest post in the union was that of vice-president. The student leaders were externed from Karachi to Hyderabad, from there to Lahore, Peshawar and Quetta. Later, Fatehyab emerged as a prominent lawyer. He was married to eminent scholar, ex-chairperson PIIA, and former ambassador Dr Masooma Hasan.