North Korea continually issues threats and alarms. The North Korean government called recent U.N. sanctions a declaration of war. Now there's talk of another nuclear weapons test. Is it just bombast, or a calculated warning?
Selig Harrison, director of the Asia Program at the Center for International Policy and Senior Scholar of the Woodrow Wilson International Center for Scholars.
Mike Huggins, spokesman for the World Food Programme; just returned from five days in North Korea
Gi-Wook Shin, director of the Shorenstein Asia Pacific Research Center at Stanford University