Ethiopian government forces have advanced to Zalambessa, a town on the country’s northern border with Eritrea, as a military counter-offensive and rapidly deteriorating relations between the two neighbours raise fears of another devastating Horn of Africa war.
Six sources, including people in contact with residents, a diplomat and a conflict expert, said Ethiopian troops had reached the town on Tuesday, 13 October 2026. The Ethiopian military and Prime Minister Abiy Ahmed’s office had not publicly confirmed the development at the time of reporting.
Zalambessa, home to roughly 15,000 people, lies on the Ethiopian side of the frontier and had been controlled by Tigrayan rebels. Witnesses and a conflict-monitoring organisation reported that Eritrean troops crossed into the area last week in support of the rebels, although it was unclear whether those forces remained in the town when the Ethiopian army arrived.
Eritrea denies that its troops entered Ethiopia. Its government has asked the United Nations Security Council to take action against Addis Ababa and says Ethiopia’s accusation of an invasion amounts to a declaration of war.
Counter-offensive pushes north
The advance followed a counter-offensive that drove a rebel alliance led by the Tigray People’s Liberation Front from a series of towns in northern Ethiopia. Fighting resumed last month, weakening the peace arrangements that ended the 2020 to 2022 Tigray war.
That conflict killed hundreds of thousands of people through violence, hunger and the collapse of health services. It displaced communities, damaged public infrastructure and left deep political and ethnic divisions that have not been fully resolved.
The renewed mobilisation is therefore alarming not only because of the immediate danger to civilians in border communities, but because Ethiopia and Eritrea are once again on opposing sides. Eritrean forces fought alongside Ethiopia’s federal government during the earlier Tigray war, despite the two countries having been enemies for decades before their 2018 peace agreement.
The relationship has since deteriorated sharply. Ethiopia closed its embassy in Asmara and expelled Eritrean diplomats earlier this month. Eritrea responded by severing diplomatic relations, while both governments exchanged accusations about military interference and regional destabilisation.
Competing claims reach the United Nations
Ethiopia has told members of the Security Council that Eritrean troops advanced as far as 60 kilometres inside Ethiopian territory. Addis Ababa says it is acting in self-defence and has accused Eritrea of supporting rebel forces. Eritrea rejects those allegations.
In a separate letter, Eritrean Foreign Minister Osman Saleh asked the Security Council to invoke Chapter VII of the United Nations Charter against Ethiopia. That chapter allows the council to consider measures ranging from sanctions to the use of force when it identifies a threat to international peace and security.
Security Council members were due to discuss the Horn of Africa crisis behind closed doors on Tuesday. The meeting reflects mounting diplomatic concern that local fighting in Tigray could become a direct interstate conflict.
The African Union had already called for “maximum restraint” from Ethiopia, Eritrea and Egypt and urged the countries to avoid actions or statements that could undermine regional stability. The United States has also urged Ethiopia and Eritrea to respect sovereignty and territorial integrity and to resolve their disputes peacefully.
Sea access adds another source of tension
Ethiopia’s desire to regain reliable access to the Red Sea has further strained relations. The country became landlocked when Eritrea gained independence in 1993. Ethiopian officials describe sea access as an existential economic issue but say it should be achieved through dialogue and peaceful agreement.
Eritrea has treated some of Ethiopia’s statements on the issue as threatening. Asmara argues that the campaign for sovereign access could become a justification for pressure on Eritrean territory.
The dispute is unfolding in a region already affected by conflict in Sudan, insecurity in Somalia and geopolitical competition around the Red Sea. Any direct war between Ethiopia and Eritrea could disrupt trade routes, deepen displacement and place additional pressure on humanitarian agencies.
Civilians face the greatest risk
For residents of Tigray and other northern regions, the diplomatic arguments are secondary to the immediate danger of renewed fighting. Communities that endured the previous war are again facing uncertainty, disrupted transport and the possibility of displacement.
Reports from the region have described shortages of cash, fuel and medical care as well as interruptions to banking, telecommunications and other essential services. Even where fighting has moved on, unexploded weapons, damaged infrastructure and fear of reprisals can delay the return of ordinary life.
Independent verification remains difficult because access to conflict zones is restricted and the parties provide sharply different accounts. Claims about troop movements, territorial control and responsibility for attacks should therefore be treated cautiously until confirmed by multiple credible sources.
The immediate priority is preventing the Zalambessa advance from becoming a direct confrontation across the international border. Diplomatic pressure, protection of civilians and restoration of communication between the governments are essential if the region is to avoid repeating a war whose human cost is still being counted.
Podium News will continue to monitor statements from the African Union, United Nations and the governments of Ethiopia and Eritrea as the situation develops.
