the Koreans?

[Duke Skymocker]

n.korea a threat?in what way?

It's generally accepted that they have ballistic missiles that may be able to hit the west coast of the united states, and definitely are capable of hitting hawaii. So not only are they a threat to a long-time US ally (S. Korea), but they are a "legitimate" threat to the united states as well. You can bet that there are a couple US navy missile subs parked in Korean waters right now.