WASHINGTON -- A U.S. Army commander asserted Tuesday that extremist fighters in northern Iraq committed atrocities against civilians, including beheadings, torture and the booby-trapping of a murdered child's body. "The enemy here did just the most horrible things you can imagine _ in one case murdering a child, placing a booby trap within the child's body and waiting for the parent to come recover the body of their child and exploding it to kill the parents; beheadings and so forth," McMaster said in an interview from Tal Afar with reporters at the Pentagon. His comments came two days after the...