He may well be, but consider three things. One, what is the chance that North Korea might undergo a political crisis, precipitated by either internal or external events during his lifetime? Secondly, is there anything he would not do or threaten to do in order to avert that? Finally, to our knowledge there have been several technical errors or accidents that came close to detonating or launching nuclear weapons, both in the US and in Russia. What are the chances that North Korea's technical and procedural controls are better than both, and does his behaviour increase or decrease the associated risks?