Dinesh D’Souza’s view, from his book:
Why Iraq? One reason is that after 9/11, a number of leading figures in the Bush administration came to the conclusion that, in the face of a catastrophe of this magnitude, it would not be sufficient to go to Afghanistan and shoot some people on the monkey bars. Rather, America needed to take action in the heart of the Middle East. Remember the old Western movies where John Wayne is called into town as the new sheriff to apprehend a bunch of cattle-stealers? He goes into the bar, where the bad guys are shouting and jeering at him. He doesn’t know who the culprits are, but he finds a couple of obstreperous hoodlums and slams their heads together, or pistol-whips them, and then he walks out of the bar. The message is that there is a new sheriff in town. After 9/11, I believe, the Bush administration wanted to convey this message to the Islamic radicals. In Saddam Hussein, Bush located an especially egregious hoodlum who would become the demonstration project for America’s seriousness and resolve.
A "demonstration project". Suddenly, the otherwise mystifyingly troop-free war-plan makes more sense, doesn’t it?
The Dish 