As for the war, I believe that the President is happy to bring down a brutal dictator, at least under certain circumstances. I mean, if it was as easy as just picking a dictator and going to war, then we could have it over with very quickly. A president with a 4 year term, who will have to campaign to get re-elected, with a House and a Senate and a hostile press to contend with has to set priorities. You can't do it all. Even if you're re-elected, you will not do it all in 8 years.
So why the heck do you think President Bush decided to go to war, along with Britain, Australia, Spain, and some other countries?