Sudan refugees

In Aug. 29, 2016 file photo, refugees prepare food during the visit of U.N. High Commissioner for Refugees Filippo Grandi to a transit center for South Sudanese refugees in the remote northwestern district of Adjumani, near the border with South Sudan, in Uganda.

More than 1.5 million South Sudanese have become refugees and their humanitarian needs are overwhelming aid efforts during the country’s civil war, according to the United Nations.

(AP Photo/Stephen Wandera, File)