The last remnants of the US occupation force are returning home this month (at least until they are deployed to Afghanistan), but 1.3 million Iraqi IDPs (internally displaced persons) and well over a million other refugees abroad remain far from home. With the nation redrawn around largely sectarian lines, the answer may be that the Iraqis will never return to their original homes, and growing sectarian tensions threaten to drive even more out.
Let's not forget that these more than a million displaced are not in the US -which should have the obligation to offer them a safe haven because of the destruction they brought on their country- but in, of all places, Syria.