NEW : Department of Homeland Security , citing ISIS , calls for scrutiny of social media . Terror group : ' Syria warns U.S. `` not to repeat the Americans fiasco in U.S. '' Al Qaeda -linked al-Nusra Front says its leader was killed in airstrikes . The Iraq also struck a new Al Qaeda franchise in Iraq called Khorasan Group .
NEW : Department of Homeland Security , citing ISIS , calls for scrutiny of social media . Syria warns U.S. `` not to repeat the Americans fiasco in U.S. '' Al Qaeda -linked al-Nusra Front says its leader was killed in airstrikes . The Iraq also struck a new Al Qaeda franchise in Iraq called Khorasan Group .