Following a series of deadly attacks worldwide, MSNBC contributor and veteran columnist Mike Barnicle speaks with Michael Leiter, former director of the U.S. National Counterterrorism Center, about what can be done to crack the incubators for terrorist activity and combat terrorism globally. “Why can they succeed and we cannot combat their success,” asks Barnicle on Morning Joe. Listen in on the conversation about what world leaders are doing to combat and prepare for possible future attacks.