How real is the North Korea nuclear threat?

This is how I see it

Well he has some weapons we know that...He has bodies to throw at us we know that...he is crazier than a craphouse rat...we know that. However, I think he also knows if he starts lobbing bombs and ammo his gravy train is gone and he will lose. His father used to rattle sabers all the time and we we gave him stuff he quietened down...this idiot I don't know. I think if he ever gets the ICBM capability versus the short range who knows. Right now, I don't think it is a viable threat...just trash talk from schoolyard gangs.

North Korea has developed nuclear weapon. North Korea has developed medium range ICBM's that might reach the west coast of the USA. North Korea might have perfected miniaturization of their weapons to fit them on their ICBM's. North Korea probably has not perfected a re-entry vehicle that will allow their nuclear weapons to re-enter the atmosphere.

I'd say the chances of North Korea hitting the continental US with a nuclear weapon anytime in the near future is pretty slim.

But their ability to hit US Interests in the Pacific region and kill several thousand US Service Members is not in doubt.

Their ability to kill millions of South Koreans with nuclear, chemical and conventional weapons is not in doubt.

The big question is Pugsley unstable enough to not know that doing the above would result in the end of his regime and his countries destruction?