Defense Secretary Ash Carter and GOP candidate Lindsey Graham had a fiery exchange over the U.S. military's strategy to fight ISIS
Defense Secretary Ash Carter and GOP candidate Lindsey Graham had a fiery exchange over the U.S. military's strategy to fight ISIS. Graham went as far as to call it "half-assed." CBS News military analyst, retired army major general Mike Lyons, joins CBSN by phone with more.
