North Korea would have lost the Korean War and disappeared as a state without the help of the Chinese, who fought the United States and other Western forces to a stalemate. Until the 1990s, North Korea’s economy was largely held together by subsidies from the Soviet Union. From 2000 to 2008, South Korea propped up the North—and bought itself a measure of peaceful coexistence—with huge unconditional gifts of fertilizer and food, along with generous investment.

