In December 2013, a political power struggle broke out between President Kiir and his former deputy Riek Machar, as the president accused Machar and ten others of attempting a coup d'état. Fighting broke out, igniting the South Sudanese Civil War. Ugandan troops were deployed to fight alongside South Sudanese government forces against the rebels. The United Nations has peacekeepers in the country as part of the United Nations Mission in South Sudan (UNMISS). Numerous ceasefires were mediated by the Intergovernmental Authority on Development (IGAD) between the Sudan People's Liberation Movement (SPLM) and SPLM – in opposition and were subsequently broken. A peace agreement was signed in Ethiopia under threat of United Nations sanctions for both sides in August 2015. Machar returned to Juba in 2016 and was appointed vice president. Following a second breakout of violence in Juba, Machar was replaced as vice-president and he fled the country as the conflict erupted again. Rebel in-fighting has become a major part of the conflict. Rivalry among Dinka factions led by the President and Malong Awan have also led to fighting. In August 2018, another power sharing agreement came into effect.