Why are immigration and emigration restricted in the DPRK?
I'm trying to learn more about the DPRK. I realize that many things said about it are exaggerated, myths, or completely false.
So, why does the DPRK let almost nobody immigrate? What restrictions are placed on citizens who want to leave?
I've also heard claims that people attempting to leave the DPRK without authorization may be shot by border guards. How accurate is that claim?
I am not trying to ask this in an offensive or hostile way. I am genuinely curious about learning the subject from an objective point of view.