N. Korea is China’s puppet. China will decide whether N. Korea will do anything or not.
We need to press China (economically) to pressure N. Korea (which it has the ability to do).
Well, China has some hard choices ahead.
The world that NK is threatening happens to be China’s best customers too. NK is the tiger that is getting too mean to ride any more.
And NK will not go quietly into that good night. It is going to have to be decapitated.