“On February 23, 1998, in Khost, Afghanistan, the World Islamic Front for Jihad Against Jews and Crusaders, founded by bin Laden…made an appeal for worldwide terror: ‘It is the duty of every Muslim to kill Americans and their allies, military or civilian, wherever possible. This obligation remains in force until al-Aksa Mosque [in Jerusalem] and Haram Mosque [in Mecca] are liberated from their current death grip and American troops are defeated and withdraw from all Islamic countries, unable any longer to threaten a single Muslim.”

 – Der Spiegel, Inside 9-11, Pages 173-174