I am hard pressed to imagine how he could have screwed up the Iraq war any worse than it is right now. He seems to have covered all the bases.
* Invaded the place by mistake, none of the threatening weapons that we went in to "disarm" were there.
* Tortured prisoners of war
* Underestimated the strength of the enemy
* Put the troops in situations where they have been ambushed countless times
* Killed thousands of innocents
* Destroyed the infrastructure & can't repair it
* Allowed the development of an insurgency that is now out of control
* No plan for ever ending the thing
Did I leave anything out?