In a report released Tuesday, the medical charity, also known as Doctors Without Borders or MSF, said armed actors and authorities were obstructing humanitarian access to contested regions and opposition-held territories despite severe civilian needs in the country.
MSF said the South Sudanese government had blocked the organization from accessing Akobo town in Jonglei state, an area affected by recent fighting where the group supports one of the region’s few functioning hospitals.

The organization also documented attacks on MSF facilities between January 2025 and April 2026, estimating that approximately 762,000 people lost access to healthcare services as a result of the violence and operational disruptions.

South Sudan has remained unstable since gaining independence in 2011, descending into civil war marked by ethnic violence, political rivalry and widespread humanitarian crises. Fighting has intensified again over the past 18 months between forces loyal to President Salva Kiir and armed groups aligned with his longtime rival Riek Machar.

According to conflict monitoring organization Armed Conflict Location and Event Data Project, violence has been reported in 73 of South Sudan’s 79 counties.
MSF said all parties involved in the conflict appeared to be using humanitarian access and aid operations to pursue military and political goals, a trend the organization described as deeply concerning given the country’s worsening humanitarian conditions.

The warning comes as international aid agencies face growing funding constraints and donor fatigue, prompting some organizations to scale back operations in South Sudan.

Senior US State Department official Nick Checker recently accused the South Sudanese government of making “insincere promises of reform” to secure international funding while obstructing lifesaving humanitarian assistance.

The United States Embassy in South Sudan said in April that the humanitarian crisis continued to deteriorate despite billions of dollars in oil revenue and foreign aid flowing into the country.

The United Nations estimates that nearly two-thirds of South Sudan’s population faces acute hunger, with insecurity, displacement and economic collapse compounding one of the world’s most severe humanitarian emergencies.