[ScylaX]

There are clearly responsible individuals at the top of the countries that have a brain, you know. No matter how "crazy" that country may be, it isn't bound to do surprise attacks that may make the whole planet run to its end, they also have a conscience, because this may go to their disadvantage, and decisively.
In a war, the alienated is always the soldier, not the person commanding them, and not the person above the army in any way. Except in some very rare exception, persons that hold the responsibility of a country know what they're doing.
And, I have to say, you're quibbling on a point, because nothing makes the NK bound to stay a dictature too, or a dictature in the same state as it is today.
If the NK is not being very military active, it's because the person(s) leading the country and the army know it would be the end of it if he began to make a serious attack. Don't fall in the rhetorical topic of the "silly dictator, all impulsive and maniac and all". The NK doesn't have any strategical or political interest into doing crazy maneuvers.

Also, the regular North Korean is an alienated individual and a victim of the intensive propaganda of the country, that kind of person isn't by any mean at the top of its country, able to make decisions.
Yes, the risk exists, but I think it will always exist in some form. What is important is how the potentially bellicose causes can manifest themselves to make this happen ? What conditions can make them truly active ?
There are little chances for them to be active, and the chances are even smaller when it comes to if they'd drastically change the face of the planet. And this isn't applicable only for the North Korea, but for EVERY country in the world. They need to HAVE reasons to use them, not just on an impulsive inspiration.
And here, I think the assumption of having one day a crazy madman that will launch a nuclear warhead for whatever reason, with the total acceptance of its army, is something that is really, really unlikely to happen. And I think it'd be stupid to believe your thesis for this very reason, because of the divergence of probabilities.

However,
To a "global despair", we're boiling down the debate to a single example that is as unique as the other countries that constitue the Axis of evil.
And we aren't even sure if they'll stay like that for a significant number of time, in fact.
So I really don't see where you're trying to get with that.