NEW : The United States summons the Syrian ambassador in Washington . There was no immediate word from the Syrian leadership about the reports from Daraa on Monday . WASHINGTON -- The United States is preparing new sanctions . Syria reports `` martyrs '' killed and mutilated by `` armed criminal groups ''
NEW : The United States summons the Syrian ambassador in Washington . WASHINGTON -- The United States is preparing new sanctions . Syria reports `` martyrs '' killed and mutilated by `` armed criminal groups ''