It looks like Kim Dumb is just doing his usual blustering. If he was to start Korean war no 2 he would be lucky to survive it. If war should break out the opening months will be like the Somme, Verdun, the Isonzo battles on steroids. However the South Koreans have a much larger population. as well as a well equipped, well trained, well led military add to this the DMZ is one of the most heavily fortified area on earth. Add to this they are backed up by the US and have other countries as Allies. After the South Koreans fully mobilize their military the North Korean advance will be stopped and they will start attacking north. I have heard the Chinese are telling Kim Dumb to calm down or else. So the chances of war are remote.