The ostensible back-up plan of the George W. Bush Administration for Iraq (once it discovered that Saddam really didn't have weapons of mass destruction) was to establish Iraq as a pattern of democracy for the rest of the Middle East to emulate. Ironically, if you ask almost anyone who lives in the Middle East, you'll find out that the prospects for democracy there are much worse than they were before the US attack on Iraq in 2003. Destruction of nascent liberty couldn't have been planned any better.
Politics is seldom simple. But the truth usually is.