Michael Morell joins "CBS This Morning" from Washington to discuss the U.S. response to the extremist group
As the White House summit on Countering Violent Extremism enters its third and final day, a new CBS News poll shows a growing number of Americans see ISIS as a major threat. CBS News senior security contributor and former CIA deputy director Michael Morell joins "CBS This Morning" from Washington to discuss the U.S. response to the extremist group.
