I think that most of the problems stem from a number of issues:
1.North Korea resolutely states that what it has with south Korea is an "armistice", a temporary cessation of open hostilities which can be withdrawn on a whim, NOT a peace treaty;
2. as per 1. above, it has liberally sprinkled the south of hostile acts even recently, witness the sinking of a south Korean corvette
3. It recently tested a long range ballistic missile by sending it flying over Japan, not the most sensible thing to do;
4.Given the UN embargo, and the geography, north Korea can only survive at the whim of two countries, neither of which is south Korea and/or the USA, namely China, and to a lesser extent, Russia.
I think that the pointy heads are not wondering if the present dictator is better or worse than his forefathers, or if he is stark raving mad. Anybody here thinking that the north Korea military is NOT thoroughly infiltrated by Chinese agents? My take is that should kim jong
.3 turn mad, his life expectancy could be measured in seconds.
Another issue is closely related to point 3 above: why on earth the Chinese should have allowed the north Koreans to be so openly hostile to neighbours and the USA? it will cause trouble for them sooner or later. I am already flabbergasted that the USA, in a quiet sort of way, has not gotten to the Chinese ear that they could be apt to treat North Korea as their "renegade province" [pun intended
], refuse any further contact with them, and invite all the ASEAN members to a quiet dinner somewhere. the only possibility of seeing south Korea, Japan, Taiwan, Vietnam and the Philippines at the same table should be sufficient to give them enough fits to squeeze north Korea into getting quiet.