One needs only look at Bosnia and Kosovo, and see the beginnings of anti-American military operations. Even in Kuwait, signs are beginning to show. After five decades in KS, KN Agent activity does not have to start Anti-American sentiment, just help it along. Then, Anti-US activity subsided nearly as fast as it began. This is not, coincidence.
Subversion is an integral part of the tools directed by Pyongyang.
The basic military threat is in sheer numbers. So, in addition to the current ballistic missile threat, there is an NBC threat of an unknown dimension to contend with, should hostilities break-out. Finally, KN is aligned with other rouge nations. Suppose KN was to export such a weapon to Tripoli. North Korea is a manifold of potential problems.