In this book, former North Korea lead foreign service officer at the U.S. embassy in Seoul, Patrick McEachern, unpacks the contentious and tangled relationship between the Koreas in an approachable question-and-answer format. While North Korea is famous for its militarism and nuclear program, South Korea is best known for its economic miracle, familiar to consumers as the producer of Samsung smartphones, Hyundai cars, and even K-pop music and K-beauty. Why have the two Koreas developed politically and economically in such radically different ways? What are the origins of a divided Korean Peninsula? Who rules the two Koreas? How have three generations of the authoritarian Kim dictatorship shaped North Korea? What is the history of North-South relations? Why does the North Korean government develop nuclear weapons? How do powers such as Japan, China, and Russia fit into the mix? What is it like to live in North and South Korea? This book tackles these broad topics and many more to explain what everyone needs to know about South and North Korea.