They have not always taken the credit like 911 it was at least a year or more after that before they took credit. And the "Pakistani" Al Qaeda said they didn't do it so what, there are many other splinter Islamic militant groups out there.
The trend among you "liberals" is to minimize the threat and never try to win a war. Regan was tired of playing games with the evil empire and won that war. We weren't allowed to win in Korea or Nam because the commie loving Dems in DC didn't want us to. Same thing here IMHO. Thank you, thank you very much