President Salva Kiir alleged that on 14 December 2013, a (largely Nuer) faction of the Sudan People's Liberation Army loyal to former vice president Riek Machar attempted a coup d'état and that the attempt was put down the next day. However, fighting broke out, igniting the South Sudanese Civil War. Machar denied trying to start a coup and fled, calling for Kiir to resign. Ugandan troops were deployed to fight on the side of the Kiir. The United Nations has peacekeepers in the country as part of the United Nations Mission in South Sudan (UNMISS). In January 2014 the first ceasefire agreement was reached. Fighting still continued and would be followed by several more ceasefire agreements. Negotiations were mediated by "IGAD +" (which includes the eight regional nations as well as the African Union, United Nations, China, the EU, USA, UK and Norway). Following a ceasefire agreement in August 2015, known as the "Compromise Peace Agreement", Machar returned to Juba and was sworn in as vice-president. Following a second breakout of in Juba, Machar was replaced as vice-president and he fled to Sudan and the conflict erupted again. Rebel in-fighting has become of 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.