and i hope that would also not get swept under the rug. >> brangham: all right, david kramer of the mccaintitute, thank you very much. >> thank you. >> brangham: the world's youngest country is tearing itself apart. south sudan was founded in 2011, but two years later, forces allied to the president and vice president began fighting each other. that civil war has led to the near collapse of the country. in partnership with the pulitzer center on crisis reporting, special correspondent jane ferguson begins a series of three reports. tonight is a look at this brutal war and its tribal roots. and a warning: some images and stories in this report are disturbing. >> reporter: this was once a busy market town. villagers from the countryside would come to leer to trade goods and catch up on news. now there is no-one. all the people have fled into the bush, hiding from violent raids by government soldiers. we found some of them a few miles away, in rebel-held land. they had crept out of hiding to get help from aid agencies. without it they will starve. their stories of what they have endured are h