A former North Korean operative gives his first interview since defecting

A North Korean soldier looks across the Yalu river near Sinuiju, opposite the Chinese border city of Dandong in April 2017. (Johannes Eisele/AFP via Getty Images)

Kim Jong Un's daughter may accompany her father to missile launches, but that doesn't mean she is North Korea's future leader, says a man whose job was once to protect the hereditary regime.

Kim Hyun-woo used to work for North Korea's top intelligence agency. He defected to South Korea in 2014 and is now on his first-ever visit to the United States.