World Mar 28 Watch 3:28 News Wrap: ‘Fair chance’ U.S. airstrike played role in Mosul civilian deaths In our news wrap Tuesday, the U.S. commander in Iraq, Lt. Gen. Stephen Townsend, says there's a "fair chance" that a U.S. airstrike played a role in killing scores of civilians in Mosul, but voiced doubt that the weapon used… By PBS News Hour