I kind of feel like North Korea is undergoing the same thing. Isolated from the world, little to no influence from the outside is visible in the country, aside from a few news reports and the help that they receive after their government threatens the world for the 1000th time. It seems like it's soldiers are in an constant state of preparing for war. Should something miraculous happen like say, the borders open, it would come as a surprise to it's citizens. My guess is the North Koreans would have trouble integrating with the rest of society, particularly with the South Koreans. In trying to do so, they might cripple the country's economy, just like Oh Daeh-Su violated his sister without recognizing who she actually is, and what he did to her.