End trade with anyone doing business with N. Korea --> The sky is falling, the sky is falling!
N. Korea continues to develop an offensive Nuclear weapons platform. Who in their right mind thinks that they won't use it?
Apparently, nearly every nation involved thinks that's a strong possibility (that they won't use it), or NoKo would already be a smoking hole on the map.
We can't ignore the possibility that those other nations involved are short sighted idiots.