Here’s a disturbing video showing U.S soldiers watching as their Iraqi Army colleagues – Shia – brutally beat Sunni civilians to near-death, as U.S. soldiers hoop and holler in support. It shows what this president is now risking: that the U.S. will become a party to one side in a sectarian civil war. It is happening already. It must be stopped. However grim things are in Iraq, this president’s policy could make things far, far worse.