In this photo taken Saturday, August 19, 2017, a government soldier prepares to head to the front lines in the town of Kuek, northern Upper Nile state, South Sudan. More than four years into South Sudan's civil war, fighting between government and opposition troops shows no signs of ending, with many on both sides and those trapped in the middle weary of the conflict, while millions of others have fled. (Photo by Sam Mednick/AP Photo)
