President Moon replaces chief of staff with envoy to China: Blue House

South Korean President Moon Jae-in replaced his chief of staff, who played a key role in improving ties with North Korea, with a longtime confidant on Tuesday as part of a shake-up aimed at raising approval ratings amid economic woes and a spy scandal. Moon replaced Im Jong-seok with Noh Young-min, a former politician who has been serving as ambassador to China since October 2017, as the top presidential secretary, the Blue House said.