BOSTON (CBS) – North Korea caught some international attention last week when they conducted another underground nuclear test. But what does this latest test mean in the big picture? Is North Korea expanding their nuclear arsenal? What are the potential implications of North Korea becoming a nuclear power? Dr. Jack Liu, a longtime contractor for the Department of Defense and the intelligence community, joins Dan to talk about this latest test and the approach the U.S. has taken in dealing with North Korea.
Originally broadcast September 15th, 2016.