The Civil War might have ended differently if the 4 million slaves had been willing to fight to the death on behalf of the Confederacy. That's what the naysayers are predicting--that the Iraqis will fight against being freed. The Germans did so until the end of the war in 1945, but the average "Aryan" German was much less likely to have an immediate relative who had suffered at the hands of the regime than is the case in Iraq today.
How much of an effort is being made to get the word to the Iraqis living in Baghdad and Basra that we don't have any desire to control their country? We just want to get rid of Saddam and get rid of the weapons of mass destruction, and then go home...but undoubtedly they are being told something quite different by the regime.