Following the Soviet Union's withdrawal from Afghanistan, Osama bin Laden returned to Saudi Arabia. The Iraqi invasion of Kuwait in 1990 had put the country of Saudi Arabia and its ruling House of Saud at risk as Saudi's most valuable oil fields (Hama) were within easy striking distance of Iraqi forces in Kuwait, and Saddam's call to pan-Arab/Islamism could potentially rally internal dissent. In the face of a seemingly massive Iraqi military presence, Saudi Arabia's own forces were well armed but far outnumbered. Bin Laden offered the services of his mujahedeen to King Fahd to protect Saudi Arabia from the Iraqi army.
The Saudi monarch refused bin Laden's offer, opting instead to allow U.S. and allied forces to deploy on Saudi territory. The deployment angered Bin Laden, as he believed the presence of foreign troops in the "land of the two mosques" (Mecca and Medina) profaned sacred soil. After speaking publicly against the Saudi government for harboring American troops, he was quickly forced into exile to Sudan and on April 9, 1994 his Saudi citizenship was revoked.His family publicly disowned him. There is controversy over whether and to what extent he continued to garner support from members of his family and/or the Saudi government.
Shortly afterwards, the movement that came to be known as al-Qaeda was formed.
