North Korea

North Korea is the most secretive country on Earth. Officially the Democratic People's Republic of Korea, it has been sealed off from the outside world since the Korean War ceasefire in 1953. The Kim dynasty - grandfather, father, and son - has ruled for over seven decades, making it the world's only hereditary communist state. Almost everything the outside world knows about daily life inside comes from defectors, satellite imagery, and the handful of carefully managed tourist visits each year.

Behind the curtain, though, there is a country with real mountains, real rivers, and 26 million real people. The Korean Peninsula was one civilization for over a thousand years before it was divided. Pyongyang was an ancient capital long before it became a showcase of socialist architecture. Mount Paektu, the highest peak on the peninsula, is sacred to all Koreans. The food, the language, the culture - these are Korean, shared with the south, even if politics has carved an unbridgeable gap between the two. North Korea is not a place most people can visit, but understanding it matters because its existence shapes the geopolitics of all of East Asia.