Refighting the Vietnam War --

this time to "win" and show how tough America is. This now clearly seems to be a major motivation for the Iraq war, both for Bush and the neocons.

Refighting the Vietnam war is yet another reason for the Iraq conflict.

That makes three official, and 12 unofficial (more likely reasons).

I think these are the top five reasons:
1) help conservative domestic agenda-- helping Bush get re-elected and helping Republican take-over of congress
2) Bush wanting to "make history" by being a famous war president
3) Re-fight the Vietnam war to show how tough America is
4) oil
5) imperialism