Are you saying Al Queda, with Osama Bin Laden as its head, and various lieutenants and proxies in the organization, did not mastermind the 911 attacks?
Or are you saying Al Queda did not have a sanctuary in Afghanistan that was used as a base for the organization?
When someone calls me a liar, I like to understand the basis for the charge.
Yes, you got it wrong
Equating AQ and Usama Bin Ladin to Afghanistan illustrates you lack a grasp for the situatuation
Osama Bin Laden was a resident of Pakistan and the actors of 911 were predominately Saudi citizens, and none were from Afghanistan. Afghanistan was no more a part of 911 than a man from mars.
To this day al Qaeda is also alive and well in Afghanistan, so no US presence has stopped that. Anyone who has served in Afghanistan knows very well that al Qaeda has not been diminished by US forces in any way.
911 was a fluke of an attack, and to claim the trillion bucks spent somehow stopped further 911 attacks is like the little boy ringing the bell to keep away the elephants.