Monday, Christiane Amanpour speaks Guor Marial, an athlete from the world’s newest country, South Sudan. The marathon runner was just seven years old when he was kidnapped and enslaved during the country’s civil war—a battle which took the lives of near 2 million people, including 28 members of his own family.In a daring escape, Marial ran away from his captors and sought refuge in the U.S. Next week he’ll be running in the Olympics. Not a citizen of the U.S. or South Sudan, Marial will be running as an independent in London. The full interview airs Monday at 2100 & 2300 CET, but you can watch a preview of the conversation about Marial's amazing story in the video above.