Ethiopia has accused Eritrean forces of entering its northern territory and advancing as far as 60 kilometers from the border, calling the move an “all-out invasion.” A letter sent by Addis Ababa to members of the United Nations Security Council and reviewed by Reuters has heightened fears that tensions between the neighboring states could develop into an open interstate conflict.
The letter, signed by Ethiopian Foreign Minister Gedion Timothewos, described Eritrea’s movement into northern Ethiopia as a “blatant act of aggression” that engaged Ethiopia’s right to self-defense. Reuters said the letter was dated October 8 and was addressed to French Foreign Minister Jean-Noël Barrot as well as the other members of the Security Council.
Eritrea rejects Ethiopia’s account
Eritrean Information Minister Yemane Gebremeskel said his country had shown restraint for years and accused Ethiopia of pursuing aggression against Eritrea. Asmara views statements from Addis Ababa about obtaining sovereign access to the Red Sea as a potential threat to Eritrea’s port of Assab. Eritrea did not explicitly confirm that its troops had crossed into Ethiopian territory.
Because the two governments are making competing accusations, the exact number of soldiers and the full extent of any advance have not been independently established. The Associated Press nevertheless reported, citing a commander with the Ethiopian government-aligned Tigray Peace Force, that Eritrean personnel had entered the towns of Adigrat and Idaga Hamus. AP clearly stated that it could not independently verify that account.
Fighting in Tigray raises regional risk
The escalation comes as fighting has intensified again in Ethiopia’s northern Tigray region between government forces and allies on one side and an opposition alliance that includes the Tigray People’s Liberation Front on the other. The Armed Conflict Location & Event Data Project, or ACLED, reported that Eritrean troops crossed the border at Zelambesa and came under drone attack near Guada. ACLED attributed those strikes to Ethiopia’s military.
In a separate field report, AP said Ethiopian federal police were working to restore order in Mekelle, the capital of Tigray, after opposition forces withdrew. Disruptions to public services and local administration continued, while a curfew remained in effect. The situation shows how cross-border tensions and Ethiopia’s internal conflict could reinforce one another.
The shadow of earlier wars
Ethiopia and Eritrea fought a devastating border war from 1998 to 2000. Relations improved after a 2018 peace agreement but deteriorated again after the 2020-2022 Tigray war. Eritrean troops fought alongside Ethiopia’s federal army against Tigrayan forces during that conflict.
Access to the Red Sea is an important part of the current dispute. Ethiopia became landlocked when Eritrea gained independence in 1993. Addis Ababa has described restoring access to the sea as an existential need, while saying that it intends to achieve that goal through peaceful negotiations.
The letter to the Security Council shows that Ethiopia is taking the crisis into international diplomacy. Yet reports of troop movements, explosions near the border and mutual accusations of aggression indicate that the risk of miscalculation remains high. Independent access to the affected areas is limited, making careful attribution essential as new claims emerge.
For now, neither side has announced a formal declaration of war. The central questions are whether Eritrean units remain inside Ethiopia, whether additional forces are moving toward the border and whether diplomatic pressure can prevent the Tigray conflict from becoming a wider war in the Horn of Africa.
