One explanation for why the international community has been slow to act is that is has been waiting for U.S. leadership. But for the U.S. to acknowledge the size and seriousness of the humanitarian disaster in Iraq would be to admit that the recent troop “surge” is not working. According to a senior UN official, “the U.S. government doesn’t want to admit there is a refugee problem because it is a sign of failure.” It would also mean acknowledging that a massive process of ethnic cleansing has taken place under the watch of the U.S.-backed government—indeed, that it has been perpetrated by the Iraqi government’s own security forces. Iraq’s Christian and Sabean minorities were decimated and have left for good. Baghdad, now cleansed and controlled by Shias, is irrevocably a Shia city, and its former Sunni-majority neighborhoods are ghost towns.