Osama bin Mohammed bin Awad bin Laden was the founder of al-Qaeda, the militant organization that claimed responsibility for the September 11 attacks on the United States, along with numerous other mass-casualty attacks against civilian and military targets. He was a Saudi Arabian, a member of the wealthy bin Laden family, and an ethnic Yemeni Kindite. Bin Laden was born to the family of billionaire Mohammed bin Awad bin Laden in Saudi Arabia. He studied at university in the country until 1979, when he joined mujahideen forces in Pakistan fighting against the Soviet Union in Afghanistan. He helped to fund the mujahideen by funneling arms, money and fighters from the Arab world into Afghanistan, and gained popularity from many Arabs. In 1988, he formed al-Qaeda. He was banished from Saudi Arabia in 1992, and shifted his base to Sudan, until U.S. pressure forced him to leave Sudan in 1996. After establishing a new base in Afghanistan, he declared a war against the United States, initiating a series of bombings and related attacks.