Osama bin Mohammed bin Awad bin Laden (10 March 1957 – 2 May 2011) was a Saudi-born Islamic dissident and militant leader who was the founder and first general emir of al-Qaeda from 1988 until his death in 2011. Ideologically a pan-Islamist, his organization is designated as a terrorist group by the United Nations Security Council, the North Atlantic Treaty Organization (NATO), the European Union, and various other countries. He is most widely known as the mastermind of the September 11 attacks in the United States.