Loosehead and Reverandfunk, I was happy for the Taliban to go, and sorry the USA didn't finish the job (more than sorry, downright annoyed, because the situation there is slowly getting worse.) Though as I said, I thought they were crazy to start the war because I thought they couldn't possibly succeed. I was sort of wrong - they didn't succeed, but they could and should have.
But I thought the Iraq war was a mistake from the start, and on that one I was definitely right. The Americans will be reluctant to leave, because of the loss of face, and also because the increasing chaos in the whole region poses a threat to Israel, the only country with which the USA really does have a special relationship. But I think in the end US voters will demand that they leave. What will happen after that, I shudder to think. As Gromit says, already the result is much more terrorism.