From Brierney Two (and if you don't know which one that is, that's okay):
In short, Iraq, in this sphere as in so many, is not Vietnam. The Vietnam War caused America to swing from extroversion to introversion. The Iraq war has a different dynamic.
That's because in the late 1960's, the Vietnamese were not going around the world carrying out suicide attacks. Vietnamese were not rioting over cartoons. The Vietnamese did not fly planes into skyscrapers.
Small point here, but neither did the Iraqis, you raving loon.