Salva Kiir Mayardit in the context of "SPLM"

South Sudan (/suːˈdɑːn, -ˈdæn/), officially the Republic of South Sudan, is a landlocked country in East Africa. It is bordered by Sudan to the north, Ethiopia to the east, the Democratic Republic of the Congo to the southwest, Uganda to the south, Kenya to the southeast and to the west by the Central African Republic. South Sudan's diverse landscape includes vast plains and plateaus, dry and tropical savannahs, inland floodplains, and forested mountains. The Nile River system is the defining physical feature of the country, running south to north across its center, which is dominated by a large swamp known as the Sudd. South Sudan has an estimated population of just over 12.7 million in 2024. Juba is the capital and largest city.

Sudan was occupied by Egypt under the Muhammad Ali dynasty and governed as an Anglo-Egyptian condominium until Sudanese independence in 1956. Following the First Sudanese Civil War, the Southern Sudan Autonomous Region was formed in 1972 and lasted until 1983. A second Sudanese civil war soon broke out in 1983 and ended in 2005 with the Comprehensive Peace Agreement. Later that year, southern autonomy was restored when an Autonomous Government of Southern Sudan was formed. South Sudan became an independent state on 9 July 2011, following 98.8% support for independence in a January 2011 referendum. It is the most recent sovereign state with widespread recognition as of 2025. South Sudan descended into a civil war from 2013 to 2020, enduring rampant human rights abuses, including forced displacement, ethnic massacres, and killings of journalists by various parties. It has since been governed by a coalition formed by leaders of the former warring factions, Salva Kiir Mayardit (Sudan People's Liberation Movement or SPLM) and Riek Machar (Sudan People's Liberation Movement-in-Opposition or SPLM-IO). The country continues to recover from the war while experiencing ongoing and systemic ethnic violence.

The South Sudanese Civil War was a multi-sided civil war in South Sudan fought from 2013 to 2020, between forces of the government and opposition forces. The civil war caused rampant human rights abuses, including forced displacement, ethnic massacres, and killings of journalists by various parties. Since the war's end, South Sudan has been governed by a coalition formed by leaders of the former warring factions, Salva Kiir Mayardit and Riek Machar. The country continues to recover from the war while experiencing ongoing and systemic ethnic violence.

In December 2013, President Kiir accused his former deputy Machar and 10 others of attempting a coup d'état. Machar denied trying to start a coup and fled to lead the Sudan People's Liberation Movement-in-Opposition (SPLM-IO). Fighting broke out between the Sudan People's Liberation Movement (SPLM) and SPLM-IO, igniting the civil war. Ugandan troops were deployed to fight alongside the South Sudanese government. The United Nations has peacekeepers in the country as part of the United Nations Mission in South Sudan (UNMISS).

South Sudan, located in northeast Africa, has seen the number of slayings of journalists jump since the start of the South Sudanese Civil War in 2013. The number of journalists killed in 2015 jumped to seven, the most in a single year in South Sudan's history. After President Salva Kiir made threatening comments about journalists, journalist Peter Julius Moi was killed, and press freedom groups responded critically to his statements. Reporters Without Borders, a group that monitors the safety and rights of journalists worldwide, ranked South Sudan as 125th for press freedom out of a possible 180 nations. No one has been charged with any of the killings.

The Sudan People's Liberation Movement (SPLM; Arabic: الحركة الشعبية لتحرير السودان, Al-Ḥarakat ash-Shaʿbiyyat liTaḥrīr as-Sūdān) is a political party in South Sudan. It was initially founded as the political wing of the Sudan People's Liberation Army (SPLA; a key belligerent of the Second Sudanese Civil War) in 1983. On January 9, 2005 the SPLA, the SPLM and the Government of Sudan signed the Comprehensive Peace Agreement, ending the civil war. SPLM then obtained representation in the Government of Sudan, and was the main constituent of the Government of the then semi-autonomous Southern Sudan. When South Sudan became a sovereign state on 9 July 2011, SPLM became the ruling party of the new republic. SPLM branches in Sudan separated themselves from SPLM, forming the Sudan People's Liberation Movement–North. Further factionalism appeared as a result of the 2013–2014 South Sudanese Civil War, with President Salva Kiir leading the SPLM-Juba and former Vice President Riek Machar leading the Sudan People's Liberation Movement-in-Opposition.

Although the party has not adhered to one consistent ideology since the independence of South Sudan and many factions exist, it has been described as "being on the left of centre ideological[ly] speaking," and section IV.2 of the party manifesto states support for a regulated market economy with similar elements to social democracy.

The Sudan People's Liberation Movement-in-Opposition (abbreviated SPLM-IO), also known as the anti-governmental forces (AGF), is a mainly South Sudanese political party and rebel group that split from the Sudan People's Liberation Movement in 2013, due to political tensions between President Salva Kiir and Vice President Riek Machar over leadership of the SPLM. Tensions grew between forces loyal to Kiir and Machar and South Sudan plunged into the South Sudanese Civil War.

The party and militia are led by Riek Machar. Machar appointed General Simon Gatwech Dual as Army Chief of General Staff, deputized by the Deputy Chief of General Staffs for operations, training, political and moral orientation, logistics, administration and finance. In June 2021, Machar removed General Gatwech Dual from the position and appointed him into the Presidency as an adviser. Gatwech however, rejected the new role, rejected Machar's leadership of the SPLM/A-IO, and declared himself interim leader, which led to fighting between Machar allies and those loyal to Gen. Gatwech formerly known as the Kit-Gwang faction throughout 2021.

The politics of South Sudan concern the system of government in the Republic of South Sudan, a country in East Africa, and the people, organizations, and events involved in it.

As a region, the Republic of South Sudan gained autonomy in 2005 with former rebel leader Dr. John Garang becoming the President of New Sudan and the Vice President of Sudan. Garang's death in 2005 led Salva Kiir Mayardit taking over as President and Riek Machar as the Vice President. Full independence from the Republic of Sudan was gained, following a referendum in 2011.