To the extent that the (ISIS's) advance is a series of urban revolts against the government of PM Nouri al-Maliki, the US would end up bombing ordinary city folk. For the US to be bombing Sunni towns all these years later on behalf of Mr. al-Maliki would be to invite terrorism against the US.
Juan ColeI argued that the Bush administration, and the Coalition officials more recently, didn't understand Iraqi society. They thought it was a blank slate, that they could use Iraqis as guinea pigs.
Juan Cole