Are you joking lol? If N. Korea launches that missile at S. Korea, the US isn't going to sit there and watch. We're talking about a possible American Korean War here.
you seriously think that is going to happen?
Kim is just power-hungry, once again. Can't ignore all the stuff being thrown at him so he's "going to bomb S. Korea". Obviously, this isn't going to work. The bomb will most likely just get destroyed mid flight by some other force. He does not have any real power, and everyone else knows this except for him.