North Korea is the most closed society in the world. Information entering or leaving the country is strictly controlled by the state including a total ban on the internet.
The Kim regime has vanquished any traces of capitalism, foreign imperialism, and the enemies—real and imagined—of the radical left. Even as communism collapsed elsewhere and over a million people died of starvation in the 1990s, the government did not waver from its course. The result is a paranoid militarized society, an astounding cult of personality, and the formal absence of any individualism.