A more depressing read is "The Story of Oh" [0] - a South Korean who chose to move with his family to North Korea ... then, upon realizing how the facts on the ground differed from the fiction he'd been taught about the place, managed to escape. Without his family, mind you. His wife demanded he escape, the better to prevent others from following in his footsteps.

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[0] http://pjmedia.com/richardfernandez/2012/07/16/the-story-of-...