North Korea is less stable now than it would be if it was the world’s government because all sorts of outside pressure contribute to its instability (technology created by more free nations, pressure from foreign governments, etc).
The outside world also contributes to it’s stability. The current leader is educated in Switzerland and he might be a less rational actor if he would simply be educated at a North Korean school
The outside world also contributes to it’s stability. The current leader is educated in Switzerland and he might be a less rational actor if he would simply be educated at a North Korean school