A Sudan People's Liberation Army (SPLA) government soldier walks towards the town of Malakal on March 20, 2014, after the SPLA allegedly took it over. Malakal is a key city in an oil-producing region in the country's northeast, 497km north of Juba. South Sudan's government has been at war with rebel groups since December 15, when a clash between troops loyal to President Salva Kiir and those loyal to sacked vice president Riek Machar snowballed into full-scale fighting. Thousands have died in more than three months fo fighting and over 930,000 civilians have fled their homes, including over a quarter of a million leaving for neighbouring nations as refugees, according to the United Nations.  AFP PHOTO / IVAN LIEMAN        (Photo credit should read Ivan Lieman/AFP/Getty Images)