Don’t take my word for it -- I saw a piece on MSNBC last year that laid it all out. When the Soviet Union occupied Afghanistan, the CIA trained him and his buddies in how to commits acts of terrorism against the Soviet forces. It worked! The Soviets turned and ran. Bin Laden was grateful for what we taught him and thought it might be fun to use those same techniques against us.
We abhor terrorism -- unless we’re the ones doing the terrorizing.