North Korea is a cultist government that is isolated from the world. Shooting off ICBMs is a real smart move
Eventuall NK will prove they have the means to hit the US with a missile. Then they go back to their blackmail games. Try to get food, energy, technology from the US for ceasing the missile threat. I expect one day they will claim to have equipped one of those missiles with a nuke, point it at Seattle and make more demands.
They won't ever get a chance to fire one. They'll be wiped out before lil' Kim pushes the red button.