In this April 13, 2017, photo, Kim Yo Jong, right, sister of North Korean leader Kim Jong Un, is pictured during the official opening of the Ryomyong residential area, a collection of more than a dozen apartment buildings, in Pyongyang, North Korea. South Korea???s Unification Ministry said North Korea informed Wednesday, Feb. 7, 2018, that Kim Yo Jong would be part of the high-level delegation coming to the South for the Pyeongchang Winter Olympics. (AP Photo/Wong Maye-E)