Kim Jong Un's teenage daughter is close to being designated as his successor to lead North Korea , according to South Korea's spy agency. South Korean lawmaker Lee Seong-kweun on Thursday shared details from a closed-door briefing with Seoul's National Intelligence Agency (NIS). "In the past, the NIS described Kim Ju Ae as being 'in study as successor' but today the ‌expression used was that she 'was in the stage of being internally appointed ‌successor'," he told reporters. Lee said the NIS is