Turkey attacks Syrian Kurds, U.S. partner in ISIS fight

The U.S. military says the leader of ISIS was killed last month by anti-regime forces in Syria’s southwest. It is Syria’s northern border with NATO member Turkey that has the U.S. concerned about new violence. The Turkish military has been attacking Syrian Kurds, the U.S.'s partner in fighting ISIS. Nick Schifrin spoke with the Kurd's commander and examines the implications.