I have to agree. I was scratching my head at the time Iraq was invaded (no it wasn't lice). However, Bush is the CIC, and he presumably was in a much better position to make the decision. Whether, it was a mistake or not, though, we are there not. Pulling out prematurely would be a bigger mistake.
Actually, it is not the job of CIC to make decision whether to go to war or not. His job is to direct war decided by the Congress.