US think tank says North Korea is grave threat for US...

An independent U.S. think tank says North Korea is regarded as one of the largest plausible threats the U.S. must prepare for next year.

The U.S. Council on Foreign Relations listed a severe North Korean crisis in its report “Preventive Priorities Survey: 2012.” The report categorizes possible contingencies into three tiers based on their relative urgency and importance to U.S. nation interests.

The report rated North Korea as a “Tier 1” threat, warning against political instability and military provocations from the communist country.

Other “Tier 1” contingencies include a mass casualty attack on the U.S. homeland or its allies, a major military incident with China, and an Iranian nuclear crisis.
(KBS World Radio, 2011-12-10)