North Korean dictator Kim Jong Un travels abroad in a bulletproof train that's been used for generations. Archival footage and an expert reveal the root of the family's paranoia and what goes on inside the "Moving Fortress."
Aleksei Kopaigorodskii and Mikhail Svetlov/Getty Images
Mikhail Svetlov/Getty Images
REUTERS/Yves Herman
MIKHAIL KLIMENTYEV/SPUTNIK/AFP via Getty Images
Kim Jae-Hwan/SOPA Images/LightRocket via Getty Images
GAVRIIL GRIGOROV/SPUTNIK/AFP via Getty Images