Ethiopia Accuses Eritrea of Invading Tigray: What We Know

Ethiopia has accused Eritrea of an "all-out invasion" of its northern Tigray region.

Foreign Minister Gedion Timothewos made the claim in an 8 October letter to members of the UN Security Council. He called it a "blatant act of aggression that engages Ethiopia's inherent right to self-defence" BBC. The letter said Ethiopia had no other option but to defend itself.

Gedion said Eritrean forces pushed up to 60km (37 miles) into Tigray. That would place them well south of the shared border and inside Tigray's boundaries. This is the most specific distance Addis Ababa has given publicly so far.

The fighting is centered on towns in northern Tigray. Ethiopia carried out drone strikes against Eritrean forces in Adigrat on Wednesday and Thursday. Conflict monitor Acled said Eritrean troops and ammunition in Adigrat were hit by multiple overnight drone strikes. Separately, witnesses reported Eritrean troops driving through a northern Ethiopian town, and Ethiopia's military striking vehicles carrying Eritrean soldiers at Guada Reuters.

A commander allied with Ethiopia's government said Eritrean soldiers entered Adigrat and Idaga Hamus AP. Tigray Peace Force commander Ermiyas Ababu, based in Mekelle, said they entered Adigrat on Tuesday and Idaga Hamus on Wednesday.

Eritrea rejects Ethiopia's account. Information Minister Yemane Gebremeskel said Eritrea faced an "unprovoked war of aggression" from Ethiopia. Each side calls the other the aggressor. Neither claim can be independently verified from current reporting.

The accusations follow a break in direct contact. Ethiopia and Eritrea severed diplomatic ties, or formal official relations, in the week before the 9 October report. Fighting between Ethiopia's government and the Tigray People's Liberation Front (TPLF), which controls Tigray, broke out two weeks before that report. Ethiopia says Eritrea backs the TPLF. Eritrea denies it.

In the week before the report, TPLF forces withdrew from Mekelle, Tigray's main city. The city is now under Ethiopian army control. Eritrea became independent from Ethiopia in 1993. Relations improved in 2018 when Abiy Ahmed became Ethiopia's prime minister.

The broader context here is a three-sided escalation with no agreed pause mechanism. The 2018 rapprochement had reshaped alliances in the north, and its collapse has returned the border to open contest. The 8 October letter puts the Security Council on formal notice while preserving Ethiopia's legal claim to self-defence, meaning its right under international law to use force to defend itself. A letter like this does not force the Council to act. It does create a written record that other governments will use to shape statements, review arms transfers and plan humanitarian aid.

In my view, three questions matter most for what comes next. The dates given point to ground entries followed quickly by air strikes. First, verification: penetration depth, which units were in Adigrat and Idaga Hamus, and the effects of the strikes at Guada are still single-source or remotely monitored. Second, geography: whether fighting stays in northern Tigray or spreads along the border will affect force needs. Third, linkage: if Ethiopia keeps tying its campaign against the TPLF to Eritrea's role, any ceasefire, or formal halt to fighting, will be harder to sequence and monitor, like trying to negotiate two disputes at once.