(NPR) – Nyalion Gutyua fed her children water lilies. And some fruit. Because that’s pretty much all there was. When the dry season came and the water lilies stopped flourishing, Nyalion Gutyua and her children joined a group of about a dozen women and children and walked to Bentiu, South Sudan’s second largest city. It took them four days. “We came here because of hunger,” she says. She’d heard she could get food in Bentiu from the U.N. They arrived at a city that is now a wasteland. Almost every building was destroyed in 2014, as fighting raged among troops loyal to the government, the Sudanese People’s Liberation Army and soldiers from the SPLA In Opposition.