U.S. troops positioned in northern Syria were fired on by Turkish troops on Friday night, the Pentagon said. “U.S. troops in the vicinity of Kobani came under artillery fire from Turkish positions at approximately 9 p.m. local Oct. 11,” said a statement from Pentagon spokesperson Navy Capt. Brook DeWalt. “The explosion occurred within a few hundred meters of a location outside the Security Mechanism zone and in an area known by the Turks to have U.S. forces present,” DeWalt added. No U.S. troops...