This really isn't news worthy material.
It's generally accepted that if North Korea were to either:
1) Sell WMDs to a terrorist group or terror supporting state or
2) Poised for an imminent attack on South Korea (which almost guarantees use of WMDs)
South Korea would launch a pre-emptive strike and all out invasion of North Korea.
If things really go down that road, the 13th redneck will be there.