I keep seeing "analysts" on TV saying that Kim Jng Un won't dare attack the United States because he knows that he would not survive such an encounter for long. My observation is that each of them are operating under the assumption that kim jong un is rational and/or sane. What if he isn't? What if he realizes that his country is circling the toilet and just says "f**k it" and launches a war? He just shut down an industrial park on the border (his side) that 120 South Korean companies work out of and 50,000 North Koreans get paychecks from, so he just might not be a rational person. In which case all bets are off.