You assume that this war will pretty much guarantee the removal of Saddam. There's very little guarantee at all. The Iraqi army is a formidable one, don't underestimate it. As well, America will ultimately have to shift some of its focus to protecting Israel from the attacks which will imminently be thrust upon it when the war begins. IN the end, a very deep hole could (and quite likely) will be dug that will be very difficult to get out of, and the world will many steps back from where we are now.