What are the implications of the emergence of a nuclear North Korea? And what should Washington's long-term goals for relations with Pyongyang be for the future? These are two questions that North Korea specialist Joel Wit recently sought to answer at a policy event at Yonsei University, Seoul.

With North Korea's nuclear and missile programs having developed with little tangible hindrance in recent years, Wit told his audience that the Unha rocket program is now likely just "the tip of the iceberg". Despite trying not to be alarmist, Wit also says that a North Korean Inter-Continental Ballistic Missile (ICBM) capable of targeting the West Coast of America might not be as far away as some think.