Ethiopia and Eritrea Edge Toward War as Tigray Truce Collapses

The United Nations Secretary-General, António Guterres, called Friday night for an immediate end to renewed fighting in northern Ethiopia, saying he was "gravely concerned" by reports that Eritrean troops have crossed the border into the country's Tigray region. The warning, delivered in a statement issued by his spokesperson, Stéphane Dujarric, came as a nearly four-year-old peace agreement that ended one of the deadliest civil wars of the past decade showed signs of fully collapsing, three weeks after fighting first reignited between federal forces and Tigrayan fighters.

Ethiopia's government has accused Eritrea of mounting what it has called an outright military intervention on behalf of the Tigray People's Liberation Front (TPLF), the regional force that fought Addis Ababa to a standstill in 2020-2022 before signing the Pretoria peace deal. Eritrea has denied sending troops at all, and independent reporters have not been able to reach the areas in question to verify either side's claims. The dispute has already severed diplomatic relations between the two Horn of Africa neighbors and raised fears, voiced by the UN, the African Union, the European Union and the United States in the span of a single week, of a slide back into regional war.

What happened on the ground

Witnesses in the border town of Adigrat told the Associated Press that Eritrean soldiers entered the area on Tuesday and reached the town of Idaga Hamus, roughly midway to the Tigrayan capital, Mekelle, the following day. The Armed Conflict Location & Event Data Project, a conflict-monitoring group, said Eritrean troops crossed the border at Zelambesa and came under drone strikes it attributed to Ethiopia's military as they advanced. Separately, residents and a local defense-force commander told the Associated Press that neither account could be independently confirmed, since telecommunications across much of Tigray remain badly disrupted.

Residents in Adigrat and Mekelle described convoys ranging from roughly 20 to 60 trucks carrying Eritrean soldiers moving south over several days, according to reporting carried by the BBC, which said it could not independently verify the troop movements or the images circulating on social media and has been unable to report from Tigray directly. The same reporting quoted a senior Ethiopian government official, Abraham Belay, telling Fana Television that "the Eritrean army has participated with its full capacity and logistics," and warning that any Eritrean escalation would be met with retaliation he described as "double."

Government-allied forces entered Mekelle over the weekend of October 3-4 after the TPLF announced its withdrawal from the city, retaking its airport without a fight. A week later, normal civic life in the city of roughly half a million people had not resumed: police stations, the mayor's office and district administration buildings remained shut, no interim administration had been installed, and many shops stayed closed on fears of looting, even as the Tigray Peace Force — a militia aligned with the federal government — imposed an overnight curfew and worked alongside federal troops to extend control over the wider region.

How the truce came apart

The current fighting broke out around September 23, when clashes erupted between Ethiopian federal forces and the TPLF, each side blaming the other for violating the Pretoria Agreement signed in November 2022, which had ended two years of civil war in Tigray. That earlier conflict, fought largely between the federal government and the TPLF with Eritrean forces fighting alongside Addis Ababa, devastated the region before the deal brought a fragile peace. The UN's mission in Ethiopia had already flagged the risk of backsliding in January, when a statement from the Secretary-General's office said it was following "renewed tensions and reported clashes" in Tigray and urged full implementation of the cessation-of-hostilities agreement.

Tensions sharpened last month when the TPLF joined six other armed opposition groups in a new alliance aimed at ousting Prime Minister Abiy Ahmed's government, a move Addis Ababa has cited as justification for renewed federal operations in Tigray. Eritrea's government, in turn, has cast the crisis differently: Information Minister Yemane Gebremeskel said Asmara was "not in the business of refuting wild allegations or narratives," and accused Ethiopia of jeopardizing regional peace through its pursuit of what he called "sovereign access to the sea." Ethiopia has been landlocked since Eritrea's independence in 1993, and Abiy has repeatedly argued in recent months that his country, Africa's second-most populous, needs direct access to a Red Sea port — an ambition Eritrean officials say is the real driver of the crisis, masked as concern over Tigray.

The diplomatic rupture has moved quickly. Ethiopia ordered ten Eritrean diplomats to leave the country and closed its embassy in Asmara; Eritrea responded by severing diplomatic relations altogether, a step that leaves the two governments with essentially no direct channel for de-escalation beyond outside mediators.

Who is being affected

The UN's humanitarian affairs chief, Tom Fletcher, called earlier in the week for all parties to grant aid workers safe and rapid access to people in need, as fighting displaced residents across central, northwestern and eastern Tigray. Verified displacement figures are not yet available, the UN said, but humanitarian teams are ready to resume aid operations in the northern regions as soon as conditions allow. In Amhara, a government-led program to help people displaced from the town of Kobo return home has been suspended after security there deteriorated, with the UN stressing that any return must be safe, voluntary and dignified.

Civilians inside Tigray are again bearing the practical weight of a conflict most had hoped was behind them. Businesses in Mekelle, Shire and other towns have shuttered on fears of looting amid the administrative vacuum, residents told reporters, even as a key southern road toward Addis Ababa reopened after fighting had cut off supplies the previous week. The region was still recovering from the earlier war and from drought-driven humanitarian need when the latest fighting began, a vulnerability that European diplomats in Addis Ababa had warned in August could turn any new round of conflict "devastating for the people of Northern Ethiopia."

What officials are saying

In his statement, Guterres reminded Ethiopia, Eritrea and every state in the region of their obligations under the UN Charter.

He reminded all States in the region of their Charter obligation to "refrain from the threat or use of force against the territorial integrity or political independence of any State," and of the principle of non-interference in internal affairs.

The Secretary-General called on the signatories of the Pretoria Agreement to return to dialogue under its framework, appealed to countries with influence over the parties to use it to support de-escalation, and said he stands ready to offer his own good offices. The African Union's Commission chairperson, Mahmoud Ali Youssouf, struck a similar note as the crisis first erupted, reaffirming the Pretoria Agreement as "the cornerstone of sustainable peace, stability and reconciliation in Ethiopia" and asking former Nigerian president Olusegun Obasanjo, the AU's High Representative for the Horn of Africa, to urgently engage both sides. Washington has also weighed in, with the State Department urging both governments to respect each other's sovereignty and territorial integrity and warning that "the Horn of Africa cannot sustain another military conflict and humanitarian crisis."

What happens next

For now, the diplomacy is running on parallel, uncoordinated tracks: UN appeals from New York, AU mediation efforts led by Obasanjo, and bilateral pressure from Washington and European capitals, none of which has yet produced direct talks between Addis Ababa and Asmara. Guterres's call for the Pretoria Agreement's signatories — the Ethiopian government and the TPLF — to return to that framework does not by itself address the Ethiopia-Eritrea dimension of the crisis, which has no equivalent standing mechanism now that the two countries have severed ties.

Much will depend on whether Ethiopian federal forces, having retaken Mekelle, push further north toward the border or hold their current positions, and on whether Eritrea escalates further or pulls back the forces it denies having sent in the first place. Humanitarian officials are watching closely for verified casualty and displacement figures once communications improve, while diplomats in the region say the immediate priority is simply preventing what began as an internal Ethiopian dispute from turning into a second interstate war between Addis Ababa and Asmara, just four years after the last one ended.