For the past four years, South Sudan, the world's youngest nation, has been torn apart by civil war. Two tribes are fighting each other, and their soldiers burn and steal any crops they come across. Famine is being used as a weapon of war. In the north of the country, 120,000 people now live in the giant Bentiu refugee camp, under the protection of UN peacekeepers. When they arrive, many civilians - including children - are on the verge of starvation.
A programme prepared by Ellen Gainsford and Laura Burloux.