Over the second half of the twentieth century, South Korea became rich, and in the first decades of the twenty-first, it’s become a global cultural superpower. The same can’t be said for North Korea: after a relatively strong start in the nineteen-fifties and sixties, its economy foundered, and in the famine-stricken mid-nineties it practically collapsed. For that and other reasons, the country has never been in a position to send forth its own BTS, Squid Game, Parasite, or “Gangnam Style.” But whatever the difficulties at home...