Consider this report – “relief operations in the country have been severely affected by violence against aid workers and aid assets, as evidenced by the looting of vital humanitarian warehouses during and after the fighting in capital Juba.”
Aid workers are being affected – “Since December 2013, at least 57 aid workers have been killed in South Sudan, including one worker who was killed during the recent conflict in Juba. Many more are still missing.”
Source http://www.un.org/apps/news/story.asp?NewsID=54622#.V6X6MPdwbqB