Kim Jong UN could possibly start a terrible nuclear war. This would start if he were to launch an attack on Washington DC. This would then force the United States to launch a counter strike which would be of greater magnitude and probably destroy every last remnants of North Korea, ridding the world of one pathetic and dangerous country. However, all of the world would be recovering from this disaster, Iran will eventually finish its nuclear weapons program.
They would then use their first bomb on the United States to show their revenge for their helper, North Korea. The United States would have been much damaged and would have to rely on other countries to launch a counter strike. So then one of the countries part of the United Nations would Nuke Iran and damage that country. In the end, Kim Jong UN would be long dead, but he would have started a tragedy, so far in depth, that would take lifetimes to rebuild.
Kim Jong UN’s nuclear war would have a higher death toll than any war in the history of the world. There would be radiation going around in every part of the world. Many nations would be torn apart because of the magnitude of the situation. Although in the end Kim Jong UN wouldn’t actually get away with starting a nuclear war because he would have died along with his pathetic country, he would have started an event that would bring the world to a hard time in which it would consider human annihilation.