Former Director of National Intelligence, John Negroponte, and Washington Post columnist David Ignatius talk to Candy Crowley about the implications of the crisis in Ukraine.
John Negroponte, Jim Johnson and Candice DeLong on the radical roots of the killers, profiling a motive and the role of technology in tracking down the killers.
Establishing the motive behind the deadly Boston bombings. A conversation with experts on national security former FBI agents Tom Fuentes and profiler Candice DeLong, Police Chief Jim Johnson, and former DNI John Negroponte.