um, guys, lmao relax. have you not read the articles? North Korea (or Kim really) *declared* that the US was declaring war on them because we banned him from the US. lol. he's a sensitive little pea. BUT if this was true, it would be bad. they have friendly relations with China and Russia, which was two frikkin big and powerful countries, that are pretty much right next to it. and this war, in theory, would be in like ~5 years lol yay
My main guess is nothing will happen, since he doesn't need people to agree with his "decisions" or need to follow them. The other guesses include a newer more powerful detonation of a nuclear warhead in North Korea to show dominance, an attack on the United States, or even an attack South Korea, possibly during one of the joint military exercises (source)
NK has declared war on us several times. They don't do anything. They're the whiny toddler who thinks they can strongarm the West.