Nuclear war is literally never going to happen. NK is developing nukes as an invasion deterrent, and it's going to work because our leaders are incompetent.
Besides, if there is military intervention, we're going to have a larger migrant crCIA on our hands. I've already heard the end of it with the loving syrian migrants, I would much rather not hearing the dipstuff republicans whine their stupid asses off about the koreans wanting to jump ship to other countries. And not just north koreans either!! I imagine south koreans would probably want to get out of NK's target because they're the first to blasted when little kimmy wants to make a show of power.