analysts say kim yo-jong is the real power just under her power. >> kim yo-jong's power exists because of proximity to the leader himself. she is the person that he entrusts more than anyone else in the regime. >> reporter: experts say one of kim yo-jong's top responsibilities now is counterintelligence, acting as her brother's eyes and ears, helping him identify who might be plotting against him inside pyongyang's dangerous halls of power. analysts say she'll be gathering intelligence when she's at the olympics, and she could also serve as a high-level back channel for the north korean government. >> if the united states and south korea want to reach out and use the olympics as an opportunity for informal discussions, those discussions can go through an unfiltered, direct channel back to kim jong-un. and she would provide that direct channel. >> reporter: meantime, with the world watching the olympics, she will put a young, telegenic face on the regime. this is a calculated move from kim jong-un, experts say, to answer ivanka trump's presence