How did the other countries achieve a semblance of Democracy? Was it always handed down to them by other nations? No. They fought for it.
How did India gained it's independence?
How did Algeria do it?
How did Ireland do it?
Scotland?
South Africa?
That's the problem with you democrats. You think people are always waiting for you to save them.
You wanna save a country? Save your own, it's going to hell as I write this.
Lets do look at how various countries gained their independence.
India? Did India escape rule by Britain by fighting? Actually, no, not really. Most of the job was done by a combination of the exhaustion of Britain by World War 2, and by international pressure, inspired by Ghandi's movement.
Algeria? Sort of, but again, the Algerians were fighting a long time before France decided to stop trying to hold on to them.
Ireland? Mostly achieved by themselves, but again, they benefited from the cost to Britain of fighting a world war (One, that time), as well as the external pressure of self-determination.
Scotland? Scotland isn't independent.
South Africa? Peaceful independence.
What about the United States? Gained independence through foreign intervention. Specifically, French intervention.
Something else to look at, I suggest, is what used to be known here, as East Germany. After the dissipation of the USSR, lots of "experts" were sure that the East Germans would NOT want to join with the West, but would want to remain independent. They assumed that the German people of the East, having been under Soviet domination for a half century, would want very much to remain separate. The "experts" were just as correct as they had been in predicting the collapse of the Soviet itself.
So. Are the N.K. people similar to the Germans, and would they blossom into normalcy the moment they are freed from oppression? Somehow? Or is there really something to the idea that people have to be "trained" or "prepared" for self-rule?