Kim Jung-on is having a colossal temper tantrum, like a two year old who wants more attention. And he's just about that dangerous. I will worry about him right after I finish worrying about the Moon falling down.
North Korea is a more radical type of communism. China is communist but not a horrible communist like Korea. Korea is so radical that many countries won't be an ally due to the fact that if anything happens the United States will step in. Why? Because South Korea would be the first place attacked. South Korea is like a little brother to the United States. The second anything happens to South Korea, the United States is there with aid or troops. North Korea needs to consider who they are threatening, we can fly stealth bombers from thousands of miles away, drop fake ammunition, and fly back. Korea can't even get their rockets half way across the world.