Harrooo USA? I so ronery, I think I attack you. See nice map of attack pran? Prease take seriousry!
So what, NK is going to attack China's #1 trading partner? I'm rolling on the floor laughing so hard my ass just fell off. The only thing keeping NK going is Chinese economic support. Take that away and the whole place collapses in days, something neither the Chinese or SK want to deal with. How many refugees would that generate? At least East Germany had an economy of sorts and look what that cost. NK has nothing. Just a bunch of hungry people.
Nope, this is just more NK extortion - make a bunch of scary noise, look all threatening and shit, and China and (indirectly) the USA will send more money to buy rice to prevent an internal collapse.
Change for NK will happen when a group of generals decides it's time to put a bullet in the new Kim's head. This is not Germany, Poland or Hungary. It's Romania. Nobody wanted them, so they had to do it themselves. The only question is, which way do they lean after the coup?