He doubtless has his faults, but it's rather unfair to label Kim Jong-un a nutter. For the sake of balance, shouldn't we consider the background? Korea was invaded and controlled by the Japanese well before WWII. Resistance to the Japanese was led by Kim Il-sung with support from the Chinese. After the war, the Americans imposed a Japan-sympathetic regime under President Park and arbitrarily divided Korea. The north was very heavily bombed by the Americans, causing huge destruction. Following the Korean war, the Americans have consistently refused to agree a peace treaty with the north. North Korean leaders are concerned that without nuclear weapons, they would go the same way as Saddam Hussein etc. While we don't have to agree with the North Korean regime, their behaviour is largely rational and conditioned by their history.