Well, first off the Baathists didn't murder 300,000 people. You seem to have erased quite a bit of history. Iraq has been to war several times..and almost every time..they've been the patsy of the US.
The Iraq Iran war was egged on by this country. In fact, Iraq was supplied by the US with the very chemical weapons that killed a great deal of the 300K people.
Next up..was Saddam Hussien was personally given the green light by April Glaspie to invade Kuwait...then told to leave..and that did it. That little bit green lighted the first pounded Iraq took by the US.
Second up..was Clinton..who needed some distraction from his Monica fling. So not only did he bomb Iraq..he pasted them with some withering sanctions. That killed a good 100K or so..
Finally up..to bring it home..was GW Bush.
And boy what fun he had!
There were NO Terrorists in Iraq..short bread.