When Kim Jong Un became the leader of North Korea in 2011, many expected his rule to be short. Years later, he remains the unchallenged dictator of a nuclear rogue state with weaponry capable of threatening the West.

In this behind-the-scenes look, former CIA analyst and North Korea expert Jung H. Pak reveals the explosive story of Kim Jong II's third son: the spoilt and impetuous child, the mediocre student, the ruthless murderer, the shrewd grand strategist.