Rubuta ci gaba don wannan sakin layi - A shekara ta 1999 al-Qaeda ta fito a matsayin babbar barazanar ta'addanci. Hare-haren bam na 1998 na ofisoshin jakadancin Amurka guda biyu a Afirka sune na baya-bayan nan a jerin hare-haren da aka kai kan bukatun Amurka a yankin yammacin Tekun Indiya. Kuma a shekara ta 2000 da USS Cole
An kai harin bam a Aden a wani yunkuri na nutsar da shi, inda aka kashe ma'aikatan sojin ruwa 17.