Every so often there’s a topic that catches what I call my “background interest.” These are the topics that I enjoy reading about but don’t obsess over. North Korea is one such topic—I definitely want to keep reading and learning about the country, the regime, the people, but I’m pursuing it gradually. Five years ago I read In Order to Live, Yeonmi Park’s story of escaping North Korea. Dear Leader: Poet, Spy, Escapee –…