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. When violence broke out in Juba on Dec. 15 life remained calm but tense in Malakal, the capital of oil-producing Upper Nile state, but the violence then radiated outward from Juba and full-fledged war broke out in the town on Christmas Day, as army commanders defected and pledged allegiance to the country’s ousted vice president, in most cases pitting the ethnic group of President Salva Kiir, a Dinka, against ethnic Nuers. (Ben Curtis/Associated Press)