Civilians arrive for shelter at the United Nations Mission in the Republic of South Sudan (UNMISS) compound in Bor, South Sudan in this December 18, 2013 picture provided by the UNMISS. South Sudan's ... more 
Civilians arrive for shelter at the United Nations Mission in the Republic of South Sudan (UNMISS) compound in Bor, South Sudan in this December 18, 2013 picture provided by the UNMISS. South Sudan's army said it had lost control of the flashpoint town of Bor on Wednesday, its first acknowledged reversal in three days of clashes between rival groups of soldiers that have triggered warnings of a slide into civil war. Picture taken on December 18. REUTERS/UNMISS/Handout via Reuters (SOUTH SUDAN - Tags: CIVIL UNREST POLITICS) ATTENTION EDITORS - THIS IMAGE WAS PROVIDED BY A THIRD PARTY. FOR EDITORIAL USE ONLY. NOT FOR SALE FOR MARKETING OR ADVERTISING CAMPAIGNS. THIS PICTURE IS DISTRIBUTED EXACTLY AS RECEIVED BY REUTERS, AS A SERVICE TO CLIENTS. NO SALES. NO ARCHIVES less 
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Reuters | Photo By HANDOUT / REUTERS
Thu, Dec 19, 2013 3:15 AM EST