Aired Friday April 20, 2:30am - 3:00amon BBC News HD

Panorama

North Korea's Secret Slave Gangs

As President Trump and the North Korean leader prepare for an unprecedented summit, Panorama investigates modern day slavery in North Korean. It is thought that more than one hundred thousand North Korean workers are posted abroad to earn money for the cash strapped regime - money that's being ploughed into Kim Jong-un's nuclear weapons' programme. An international consortium of journalists has filmed undercover to reveal secret work gangs operating in Russia, China and even in the EU in Poland.