World's Great Leaders Who Killed in Air Crash: This article the world's great leaders have been listed who were killed in air crashes like recently Polish President Lech Kaczynski who has been killed after his plane crashed in foggy conditions in western Russia. Former Pakistan President General Zia-ul-Haq, Dag Hammarskjold a UN secretary-general, Abdul Salam Arif (President of Iraq),General Omar Torrijos (Mozambican president) are the leader they loss their life in plane crash.