BEIRUT — U.S. forces were targeted again Monday when a suicide bomber drove a car toward a joint U.S.-Kurdish convoy and blew it up 11 yards from a checkpoint in northeastern Syria. There were no U.S. casualties, according to a statement from the U.S.-led coalition. One Kurdish policeman was lightly injured, according to a statement from the Kurdish-led militia group. “We will continue to review the situation and provide updates as appropriate,” said the coalition statement. The attack near the town of Shadidi came as the United States begins to draw down its presence in Syria and other countries step up their activity there.