South Sudan’s fragile peace: A timeline of conflict and ceasefire

Grinjé Bringi

More than a decade after war broke out in Juba, South Sudan’s road to peace remains uncertain

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OTTAWA — Renewed clashes between forces loyal to President Salva Kiir and Vice-President Riek Machar, along with the deployment of Ugandan troops into South Sudan, have reignited fears that the country’s fragile peace agreement is at risk of collapse. The escalation in Upper Nile has intensified political mistrust and raised fresh concerns about regional stability.

As of March 2025, violence in Upper Nile threatens to unravel the 2018 peace deal, pushing South Sudanese communities both at home and abroad into renewed uncertainty.

This timeline outlines the key moments of South Sudan’s conflict since 2013. Scroll through to explore how the war unfolded, how peace was negotiated, and why the promise of lasting stability still hangs in the balance.

Armed youth in Rumbek, South Sudan (2018), Photo by Randy Fath via Unsplash

A timeline of South Sudan’s Conflict and Fragile Peace Process

December 2013

Tensions erupt in Juba

Tensions erupt in Juba between President Salva Kiir and Vice-President Riek Machar. What begins as a political dispute escalates into armed conflict, dividing the military and the country largely along ethnic lines.


Source: BBC News

2014–2015

Conflict spreads

Fighting spreads across Bentiu, Bor, Malakal and other towns. Atrocities are reported and ethnic targeting intensifies. In early 2014, Ugandan troops are deployed to South Sudan under a bilateral agreement to support Kiir’s government. The intervention helps government forces regain territory but sparks diplomatic tensions in the region. Ceasefire efforts repeatedly collapse.

Sources: Amnesty International, International Crisis Group

August 2015

Peace agreement signed

The Agreement on the Resolution of the Conflict in South Sudan (ARCSS) is signed in Addis Ababa. Intended to end the conflict and establish a transitional government, the deal stalls amid mistrust and limited implementation.

Source: UNMISS

July 2016

Peace agreement disintegrates

The 2015 peace deal collapses as heavy clashes erupt in Juba between government forces and opposition fighters. Machar flees the country. Violence surges and international concern escalates.

Source: International Crisis Group

September 2018

A new peace deal

A new peace deal is signed in Khartoum: the Revitalized Agreement on the Resolution of the Conflict in South Sudan (R-ARCSS). A fragile ceasefire takes hold and plans for a transitional unity government framework are introduced.

Source: IGAD

February 2020

Unity government

A unity government is formed. Machar returns as First Vice-President. Reform implementation begins but remains slow and inconsistent.

Source: Government of South Sudan

2021-2022

Roadblocks to peace persist

Key provisions such as army integration and permanent constitution are delayed. Localized violence increases, particularly in Jonglei, Warrap and Upper Nile states.

Source: Radio Tamazuj

September 2024

2024 Elections postponed to 2026

Elections scheduled for December 2024 are postponed to late 2026. Kiir’s administration extends the transitional period by two years. The decision fuels frustration among the public and opposition figures.

Source: International Crisis Group

March 2025

Ugandan troops deployed

Clashes erupt between forces loyal to President Salva Kiir and Vice-President Riek Machar in Upper Nile.

Machar is placed under house arrest by government forces, leading to heightened tensions and concerns over the stability of the 2018 peace agreement.

Ugandan military officials announce the deployment of special forces to Juba to “secure” the city; however, South Sudanese authorities decline to confirm this presence. Analysts warn that these developments could signal a potential collapse of the peace deal.

Source: Reuters

As South Sudan approaches the 14th anniversary of its independence in July, the path forward remains uncertain. Delayed reforms, political mistrust and foreign involvement have cast doubt on the viability of the peace process.

How can South Sudan break the cycle of conflict and build a united future?

If you have ideas, solutions or perspectives on the way forward, we invite you to share them. Add your voice to the conversation and help shape a different narrative for South Sudan.

Subscribe to the Junub is South newsletter to stay informed, engaged and connected.

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Grinjé Bringi

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