Ethiopia Has Been Patient. The Embassy Closure Shows the Limit Has Been Reached. Hence Ethiopia’s decision to close its embassy in Asmara and expel 10 Eritrean diplomats is not an impulsive diplomatic gesture. It is the latest and potentially most consequential step in a long sequence in which Addis Ababa has repeatedly absorbed pressure, issued warnings, pursued diplomacy and avoided turning confrontation with Eritrea into an interstate war. That history matters.

Today’s decision should therefore not be understood simply as another deterioration in Ethiopia–Eritrea relations. It is better understood as a threshold decision: Ethiopia is signalling that the accumulated pattern of security threats emanating from its northern neighbour has reached a point at which normal diplomatic relations can no longer be treated as sufficient. And the timing could hardly be more significant.

Ethiopian territory has recently come under renewed attack from forces operating out of the Tigray-Afar theatre. Towns including Abala and Erebti have been contested, while fighting has pushed eastward through Afar toward the strategic routes connecting Ethiopia to Djibouti.

At the same time, Ethiopia’s military leadership has accused Eritrea of supporting the TPLF and facilitating external assistance to the renewed insurgency. The president of the Afar regional government has gone further, alleging direct Eritrean military participation on the Asdab-Bure front through Berhale and Dallool. For Addis Ababa, the significance is therefore cumulative. The question is no longer simply what Eritrea has said or what Ethiopia has said. The question is how long a state can be expected to exercise restraint while its border environment is repeatedly transformed into a security challenge. Today’s embassy closure is a diplomatic measure to that effect.

International diplomatic practice gives states considerable latitude to determine the level of diplomatic relations they maintain. Under Article 9 of the Vienna Convention on Diplomatic Relations, a receiving state may declare a diplomat persona non grata without having to provide a formal explanation. Article 45 also expressly contemplates the breaking-off of diplomatic relations or the withdrawal of a mission, while requiring the protection of diplomatic premises and property. In other words, Ethiopia’s action today falls squarely within established diplomatic practice. It is severe. But it is also controlled.

A government facing what it considers hostile conduct from a neighbouring state has a spectrum of responses available to it: protests, summonses, warnings, expulsion of diplomats, reduction of diplomatic representation, suspension of relations and, at the far end of the spectrum, defensive military action. And Ethiopia has chosen the diplomatic end of that spectrum today, evidencing that Addis Ababa is still distinguishing between responding to a security threat and immediately converting that threat into interstate war.

Ethiopia’s strategic patience has been unusually visible. The 2018 peace opening between Ethiopia and Eritrea was extraordinary. After two decades of military hostility, Prime Minister Abiy Ahmed and President Isaias Afwerki declared the state of war over and restored diplomatic relations. Eritrea reopened its embassy in Addis Ababa days later. Ethiopia therefore demonstrated that it was willing to move from confrontation to reconciliation when an opportunity arose. The relationship subsequently became even more complicated during the 2020–2022 Tigray war. Eritrean forces entered Tigray alongside Ethiopian federal forces. The common military objective temporarily brought Addis Ababa and Asmara onto the same side of the battlefield. Yet the Eritrean maneuver to manipulate the circumstances of the war to an end that does not serve Ethiopia’s long term national security interests, the relationship deteriorated again.

The lesson from the Ethiopian side appears to have been consistent: keep diplomatic space open for as long as possible, even when the security relationship is deteriorating. That patience has been tested repeatedly by Eritrea who chose none other than direct and indirect hostility and belligerence against the Ethiopian state and government.

From Addis Ababa’s perspective, the strategic sequence is increasingly difficult to ignore. A former adversary in Tigray becomes a renewed armed opponent. A broader coalition of Ethiopian armed groups emerges. Fighting spreads beyond Tigray into Amhara and Afar. Strategic Afar towns that are vital to Ethiopia’s principal economic lifeline through Djibouti come under attack.

Ethiopia repeatedly warns of external interference by Eritrea. Called for mediation repeatedly. Eritrea insisted on continuing the path of violence, sabotage and disruption. And now Ethiopia closes its embassy in Asmara and expels Eritrean diplomats. That is not a single crisis. It is a cumulative security pattern. And cumulative patterns are precisely how states decide that an existing diplomatic framework has ceased to provide adequate protection for their national interests.

Hence, the Ethiopian response has developed through progressively stronger measures. Diplomatic engagement came first. Public warnings followed. Security accusations became increasingly explicit. Ethiopia has now officially communicated that a boundary has been reached without immediately crossing into open interstate hostilities. This is not an announcement that it has abandoned diplomacy. It is using diplomacy itself as an instrument of national security. At this point, one can’t say Ethiopia’s strategic defense is infinite and defensive military preparations and counter-offensive responses are off the table.

By Horn Review Editorial