I know spain underwent massive transformations in the late 1970s. Chile underwent transformations in the late 1980s. I think Yugoslavia has changed alot since NATO helped overthrow the government.
Seeing how the US will be seen as invaders if we run post war Iraq, would an international coalition made up of people who have first hand experience on how to transform a totalitarian dictatorship into a liberal democracy be a good idea for a postwar transitional government or would the cultural barriers prevent if from working? the people who spearheaded the transformations in Spain, Yugoslavia, Chile, and all the other governments that have undergone massive changes in the last few decades can play a major role. That would not only make the US look like less of an occupying force but people with firsthand knowledge on reformation would have a major role.