The most Christian country in Asia after the Philippines, South Korea sends missionaries spreading the gospel and dispensing humanitarian aid throughout Asia, Africa, and the Middle East. In contrast to the general ambivalence most South Koreans show defectors, the missionaries are passionate about the plight of North Koreans. Thousands of South Korean missionaries—sometimes joined by their Korean-American counterparts—have flocked to northeastern China, where they work quietly so as not to provoke the Chinese authorities, operating small, unregistered churches out of private homes.

