Photogallery: South Sudan
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A soldier from South Sudan's army stands guard in Malakal in the Upper Nile State of South Sudan, Dec. 31, 2013.
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The U.N.'s top humanitarian official in South Sudan, Toby Lanzer, assesses the situation at the U.N. compound where many displaced have sought shelter in Bentiu, Unity state, South Sudan, Dec. 24, 2013. (UNMISS)
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A pirogue packed with passengers arrives at a dock after crossing a waterway near the town of Malakal, seen from an airplane over South Sudan, Dec. 30, 2013.
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U.N.'s top humanitarian official in the country Toby Lanzer, left, makes a visit to assess the humanitarian situation at the U.N. compound where many displaced have sought shelter in Bentiu, in oil-rich Unity state, in South Sudan, Dec. 24, 2013.