Kim Yo-jong, the sister of North Korea’s Supreme Leader Kim Jong-un, is the regime’s chief propagandist, internal administrator and foreign policymaker. And as Sung-Yoon Lee details in his book, “The Princess,” she is the most powerful woman in North Korean history and should not to be dismissed or underestimated by the West. Lee spoke with host Carol Hills when his book came out in the fall.This story originally aired on Sep. 22, 2023.