Ethiopian Territory Used to Support Sudan's RSF in Blue Nile, Investigations Reveal

Multiple independent investigations conducted between November 2025 and September 2026 have documented the use of Ethiopian territory to train, equip, and stage forces of Sudan's Rapid Support Forces (RSF) for operations in the Blue Nile state. These findings, compiled by Reuters, the Yale School of Public Health’s Humanitarian Research Lab, Le Monde, and Middle East Eye, suggest a significant logistical and operational rear base for the RSF within Ethiopia.

The study assesses the existing evidence, assigns confidence levels to its claims, and identifies areas requiring further investigation. It also introduces two new observations not previously detailed in public reports: a specific four-day convergence of events in late August 2026 and a notable omission within a UN Fact-Finding Mission report published on September 3, 2026. These revelations raise critical questions about cross-border support and regional stability.