What happened
Sudan's war between the Sudanese Armed Forces (SAF) and the Rapid Support Forces (RSF) has continued through 2026 with no negotiated settlement in sight, and reporting from ACLED, Crisis Group and UN sources has increasingly framed the conflict as one that has outgrown its domestic origins. Both belligerents are reported to draw on external backing — material, financial or diplomatic — from a widening circle of regional states, while neighbouring countries including Chad, South Sudan, the Central African Republic and Libya have been drawn into the conflict's humanitarian and security spillover, hosting refugee flows, cross-border arms movement and, in some reporting, direct involvement of armed actors operating across the border.
Darfur has remained a particular focus of international concern, with reporting of mass displacement, communal violence with ethnic dimensions, and continued contestation over El Fasher and other urban centres. UN and Crisis Group reporting has repeatedly flagged the risk of the conflict formally fragmenting into parallel governing authorities, with the RSF and allied political structures asserting administrative control over areas it holds, in parallel to the SAF-aligned government structure.
Why it matters
A regionalised Sudan war raises the stakes considerably beyond an already catastrophic domestic humanitarian crisis. It threatens to draw the wider Horn of Africa and Sahel-adjacent security environment into a protracted proxy dynamic, complicates mediation because more capitals now have a stake in specific outcomes, and increases the risk that arms, fighters and financing flow across a wider arc of already fragile states. For an INGO and commercial audience, this matters because operating environments in Chad, South Sudan, the CAR and Libya are now partly hostage to decisions taken in Khartoum, Port Sudan and El Fasher, not solely to their own domestic dynamics.
Actors and alignments
The SAF, under General Abdel Fattah al-Burhan, retains recognition as Sudan's internationally seated government and reported backing from a set of regional and international partners sympathetic to a state-military framing of the conflict. The RSF, under Mohamed Hamdan Dagalo ('Hemedti'), has consolidated territorial control across much of Darfur and reportedly sustains external supply lines that have proven difficult for mediators to fully interdict despite public denials from the states concerned. Beyond the two principal belligerents, a patchwork of armed movements, former Darfur rebel factions and community defence forces have aligned variously with each side, often along lines shaped as much by local and historical grievance as by the national contest for power.
Sudan's war is no longer usefully described as a two-sided civil conflict. It is better understood as a regional contest being fought substantially on Sudanese territory, with a growing number of external actors for whom the outcome is now a strategic interest in its own right, not a humanitarian afterthought.
Security implications
For organisations operating in Sudan itself, front lines remain fluid and access to accurate, real-time information on control of territory is frequently poor, particularly in Darfur and Kordofan. For those operating in neighbouring states, the security implication is increasingly indirect: displacement-driven pressure on host communities, arms proliferation along porous borders, and the risk that armed actors linked to the Sudan conflict use neighbouring territory for rest, resupply or recruitment, potentially drawing host-state security forces into cross-border operations.
- Continued or intensifying siege and urban-warfare reporting around contested centres such as El Fasher and other Darfur towns.
- Reports of cross-border arms and fighter movement into Chad, South Sudan, the CAR or Libya.
- Diplomatic statements or troop movements by regional states indicating deepening direct involvement rather than indirect backing.
- Fragmentation of RSF or SAF-aligned coalitions, which historically has preceded shifts in territorial control.
- Rising refugee and IDP flow rates recorded by UNHCR and OCHA in border areas of neighbouring states.
Business implications
Companies with regional supply chains, particularly in logistics, extractives and agriculture, across Sudan's neighbours should assess exposure to secondary effects of the war: currency and fuel disruption in Chad and South Sudan linked to Sudanese trade and remittance flows, insurance and security-cost inflation along cross-border routes, and reputational risk associated with any commercial activity, however indirect, connected to actors or supply chains implicated in the conflict economy on either side.
NGO/humanitarian implications
The humanitarian response inside Sudan remains severely constrained by access denial, insecurity and underfunding relative to assessed need, and agencies working in neighbouring host states face their own capacity strain as displacement flows continue. Agencies should plan on the basis that the conflict's regional character will continue to complicate cross-border response coordination, and should invest in strengthening coordination mechanisms with neighbouring-state operations rather than treating the Sudan response and neighbouring-country responses as separate portfolios.
- Strengthen cross-border coordination between Sudan country programmes and neighbouring-state operations in Chad, South Sudan and the CAR.
- Build flexible, rapidly deployable surge capacity for displacement spikes in border regions.
- Maintain independent, real-time access mapping given the unreliability of front-line control information.
- Engage early and repeatedly with regional diplomatic tracks to flag humanitarian-access conditions in any ceasefire discussions.
What to monitor next
Track Crisis Group and UN reporting on external backing to both SAF and RSF for signs of deepening or, alternatively, waning regional commitment; monitor ACLED data on cross-border incident spillover into Chad, South Sudan, the CAR and Libya; and watch UNHCR displacement figures for border regions as a leading indicator of humanitarian and security strain in host states.