>>2Or, you know, you're an idiot.
Now granted the sentiment is somewhat accurate - Their base of power is the middle east. The further out you stretch, the less authoritative they become.
HoweverAny group will take time in re-deciding their leadership - Especially when its a group that is for a so called holy mission. They're representing their god after all. After the leadership has changed, assuming that there are no disagreeances in the group which may cause internal strife, the new leader then needs to take stock of what resources they have and generally get a feel for what they're doing.
If there IS a large scale disagreeance, it can lead to assasination of their own leadership and an all out inter-factional war against themselves. Small time street gangs and the like see this happening often.
Your confidence is entirely misplaced. It is not that they lack any particular power to affect things outside of their jurisdiction, but that their leadership is still transitioning.
That being said - Yeah, Al-Qaeda has succeeded in hiding in the desert ever since they pissed off america. Guerrilla warfare is one thing, but poking one of the world's super powers and then attempting to hide in your country and outlast them?
You can tell its a religious group, no other logical and sane minded military group would do shit like that without a back up plan or allies.