Iraq is not like Korea, Germany or like Japan. Those countries weren't based on tribal factions and a borderline psychotic adherence to religious beliefs. For the most part, they were nations based on laws before we gave them democratic rule. Why do you think China is communist today? It's a country founded on strongman rule. It is a country where democracy and discussion was second to imperial rule and the Mandate of Heaven.
Going into Iraq a 3rd time will be a mistake if we go at it alone and the way it looks, that's how it's going to be. Unless we can shore up support from other nations, we're looking at thousands of American men and women dying for nothing other than the same neoconservative bull**** we've been dealt for nearly 15 years.