Renewed fighting between Ethiopian federal forces and TPLF-aligned elements, combined with Eritrea's posture and Ethiopia's sea-access ambition, has re-opened the question of a wider regional confrontation in the Horn. This piece sets out what would have to happen for that to occur — and what organisations should be watching before it does.
Current situation
Tigray's internal political split has produced factions with different views of both Addis Ababa and Asmara. Federal attention is simultaneously absorbed by Amhara and Oromia. Eritrea reads Ethiopian sea-access rhetoric as directed at it. None of these actors currently benefits from open war; all of them are positioned for it.
Key actors
- Ethiopian federal government and ENDF.
- TPLF factions and the Tigray interim administration.
- Eritrean government and EDF.
- Amhara Fano formations and the Oromo Liberation Army.
- Sudanese belligerents with cross-border interests in al-Fashaga.
- Gulf states, Egypt, Türkiye and Djibouti as external stakeholders in the sea-access question.
Potential triggers
- A Tigray faction openly aligning with Asmara or with Addis Ababa against the other.
- Ethiopian force movement toward the Eritrean border or the Assab axis.
- An incident in al-Fashaga drawing Sudanese and Ethiopian forces into direct contact.
- Collapse of the Tigray interim administration and a security vacuum in the north.
- A formal Ethiopian move on a port arrangement that Eritrea or Djibouti reads as coercive.
Early warning indicators
- Mobilisation language in state media on either side; recall of reservists in Eritrea.
- Airspace advisories and NOTAMs over northern Ethiopia and Eritrean airspace.
- Unexplained troop concentrations detectable in open satellite imagery near Zalambessa, Badme and the Assab road.
- Diplomatic withdrawals, embassy drawdowns and travel-advisory upgrades.
- Fuel and food price spikes in Mekelle, Adigrat and Asmara-adjacent markets.
Scenarios
- Managed tension (most likely near term): rhetoric and proxy pressure, no state-on-state offensive; access remains constrained but functional.
- Localised conflict: fighting in Tigray with Eritrean involvement short of full mobilisation; northern access closes, Addis Ababa unaffected.
- Regional escalation (low probability, high impact): direct Ethiopian–Eritrean hostilities intersecting with Sudan; corridor closures, airspace disruption and mass displacement.
Operational implications
- Hold a written trigger-and-response matrix for northern Ethiopia with named decision owners.
- Pre-position 60 days of critical stock for northern programmes; assume ground resupply stops first.
- Maintain communications redundancy that survives an internet shutdown.
- Plan staff relocation on the assumption that Addis Ababa airport remains open but northern road movement does not.
- Separate the Addis Ababa business-continuity plan from the northern operations plan — they will fail at different times.