Guess I have a very different view William..
If the present difficulties in the Mid-east is what you're referring to (along with numerous other Islamoterrorist hot spots); I would rather think of that action as "self defense"...much as with the Axis powers of WW2.
If we had not stopped the Nazis and Imperial Japan...they would not have stopped before our defeat !
The Islamoterrorists have the same goal in mind....they have already declared such....they are duty bound to destroy the "great satan"..
If one has even a rudimentary grasp of economics, he knows that faced with a series of 9/11 incidents, any national economy is extremely fragile.
Thus, the answer is simple...destroy them and their network ...or they destroy us..
Please recall...we suffered several incidents..The Khobar towers, the '92 World Trade Towers blast, the USS Cole attack etc, etc that were unanswered by the previous administration...
That evidence alone says that uninterrupted, the enemy would have continued attacking with ever more daring and devastating results...
We had to act in self defense...or sit here and be destroyed...