The problem is, nobody has ever written an operations manual for freeing a country of 25 million people who have lived under a dictator for 35 years. Had there been one, I'm sure we wouldn't have made mistakes. However, I think we're actually doing quite well. Remember, Japan wasn't ready for it's new government until 4 years after we got there.
They may have written it, but rest assured if they did, it's a piece of crap. If you listen to NPR, you'll hear minor Clinton administration ex-functionaries or random liberal intellectuals talk about studies that were done on nation-building. Always, always, whining about George W. Bush not consulting them. I observe that W. and Rummy did it their own way. That's essential. If they had consulted all these weenies, it would have been disaster-by-committee.