Ethio–Eritrean Relations:

A Historical and Geopolitical Timeline

1. The Imperial Era and Foreign Competition (1865–1890)

The modern history of Ethio–Eritrean relations cannot be understood without examining the strategic rivalry that developed around the Red Sea and the Nile Basin in the nineteenth century.

In 1865, Egypt under Khedive Ismail occupied Massawa after acquiring it from the Ottoman Empire. Egypt’s broader objective was not merely control of the Red Sea coast but the construction of a vast African empire extending toward the sources of the Nile. To achieve this, Egyptian forces launched military campaigns against Ethiopia. However, Ethiopian armies decisively defeated Egypt at the Battles of Gundet (1875) and Gura (1876), ending Egypt’s ambitions to conquer the Ethiopian highlands by force.

As Egypt’s influence declined, Italy emerged as a new colonial actor in the region. In 1869, an Italian company acquired Assab. Italy later occupied Massawa in 1885 and formally established the colony of Eritrea in 1890. For the first time in history, the northern Red Sea coast was politically separated from the Ethiopian highlands and incorporated into a European colonial empire.

2. Colonial Rule and Federation (1890–1962)

Eritrea remained under Italian colonial administration until Italy’s defeat during World War II in 1941. Following a decade of British administration, the United Nations adopted a federal arrangement linking Eritrea with Ethiopia in 1952.

The federation granted Eritrea considerable autonomy while preserving Ethiopian sovereignty. However, tensions emerged over the distribution of power between Addis Ababa and Asmara. In 1962, Emperor Haile Selassie dissolved the federation and formally integrated Eritrea into Ethiopia.

This decision triggered an armed struggle that would last for three decades.

3. The Eritrean Armed Struggle and Regional Rivalries (1961–1991)

The Eritrean Liberation Front (ELF) was founded in Cairo in 1961, marking the beginning of Eritrea’s armed struggle for independence. During the Cold War, the Eritrean question became intertwined with broader regional rivalries involving Ethiopia, Sudan, Egypt, and various international actors.

Throughout the conflict, many Ethiopian analysts viewed Egypt’s support for Eritrean movements as part of a broader strategy aimed at weakening Ethiopia and limiting its capacity to challenge Egypt’s dominance over Nile affairs.

The armed struggle intensified during the Derg era, eventually leading to the emergence of the Eritrean People’s Liberation Front (EPLF) as the dominant Eritrean force. Simultaneously, the Tigray People’s Liberation Front (TPLF) was fighting against the Derg regime in northern Ethiopia.

In May 1991, the EPLF captured Asmara while the TPLF-led coalition entered Addis Ababa, bringing an end to the Derg regime.

4. Eritrean Independence and Strategic Realignment (1991–1998)

Following a United Nations-supervised referendum in 1993, Eritrea formally achieved independence. Ethiopia became the world’s most populous landlocked country and lost direct sovereign access to the Red Sea.

Initially, relations between the new Eritrean government and the TPLF-led Ethiopian government were exceptionally close. Economic integration, security cooperation, and open borders characterized the early years of independence.

However, disagreements over borders, trade arrangements, and political influence gradually emerged.

5. The Border War and the Era of Hostility (1998–2018)

In 1998, disputes over the border town of Badme escalated into a devastating interstate war that lasted until 2000. Tens of thousands of people were killed, and relations between the two countries collapsed.

Although the Algiers Agreement formally ended the war, Ethiopia and Eritrea entered a prolonged period of “no war, no peace.” During this twenty-year stalemate, the two governments actively supported opposition groups against one another.

During this period, Eritrea became a hub for numerous Ethiopian opposition and armed movements. Egypt maintained close relations with Eritrea and was frequently accused by Ethiopian officials and analysts of supporting anti-government forces through Eritrean territory.

From Addis Ababa’s perspective, the emerging Egypt-Eritrea relationship reflected a broader geopolitical strategy aimed at keeping Ethiopia strategically constrained, particularly regarding Nile politics and maritime access.

6. The Ethiopian Political Transition and Peace with Eritrea (2018–2019)

In 2018, widespread public protests across Ethiopia led to a major political transition within the ruling Ethiopian People’s Revolutionary Democratic Front (EPRDF).

After Prime Minister Hailemariam Desalegn resigned, the EPRDF elected Dr. Abiy Ahmed as chairman in March 2018. In April, Abiy became Prime Minister and launched an ambitious reform agenda.

One of his most significant achievements was ending two decades of hostility with Eritrea. In July 2018, Ethiopia accepted the implementation of the Eritrea-Ethiopia Boundary Commission ruling, paving the way for peace.

The rapprochement fundamentally reshaped regional politics. On October 11, 2019, Prime Minister Abiy Ahmed received the Nobel Peace Prize for his efforts to normalize relations between Ethiopia and Eritrea.

The same year, the Prosperity Party was established, replacing the EPRDF coalition. The TPLF refused to join the new party and relations between Mekelle and Addis Ababa rapidly deteriorated.

7. The Tigray Conflict and Renewed Strategic Alignments (2020–2022)

Tensions between the Federal Government and the TPLF escalated throughout 2020.

Disputes over election postponements, constitutional authority, and political legitimacy culminated in the TPLF’s attack on the ENDF Northern Command on November 3, 2020. The Federal Government responded by launching a military operation in Tigray.

The conflict quickly expanded beyond Tigray and became one of the most destructive wars in modern Ethiopian history.

Eritrea entered the conflict on the side of the Ethiopian Federal Government, viewing the TPLF as a longstanding security threat. TPLF forces responded by launching missile attacks against Eritrean targets, including Asmara.

The war continued until November 2, 2022, when the Federal Government and the TPLF signed the Pretoria Peace Agreement under African Union mediation, ending large-scale hostilities.

8. Post-Pretoria Tensions and the Re-Emergence of Regional Rivalries (2022–Present)

The Pretoria Agreement transformed Ethiopia’s internal political landscape but also created new regional dynamics.

Following the peace agreement, relations between Ethiopia and Eritrea became increasingly strained. Eritrean officials expressed concerns over aspects of the Pretoria settlement and the future political trajectory of Tigray.

Internal divisions subsequently emerged within the TPLF itself, producing rival factions led by Debretsion Gebremichael and Getachew Reda. These divisions complicated implementation of the peace process and created new security concerns in northern Ethiopia.

At the same time, Ethiopia intensified its diplomatic campaign regarding maritime access and continued advancing its position on Nile issues, particularly in relation to the Grand Ethiopian Renaissance Dam (GERD).

Meanwhile, Egypt and Eritrea strengthened their political and security cooperation. From the perspective of many Ethiopian analysts, this partnership reflects longstanding strategic concerns regarding Ethiopia’s growing regional influence, Nile policy, and aspirations for maritime access.

Conclusion

Ethio–Eritrean relations have undergone dramatic transformations over the past century and a half. The relationship has evolved from colonial separation and armed struggle to cooperation, war, reconciliation, and renewed uncertainty.

The Red Sea, the Nile, and the broader balance of power in the Horn of Africa have consistently shaped these dynamics. While periods of partnership have demonstrated the potential benefits of cooperation, recurring geopolitical rivalries continue to influence relations among Ethiopia, Eritrea, and regional actors such as Egypt.

Today, the future of Ethio–Eritrean relations remains central not only to the stability of the Horn of Africa but also to the wider geopolitical contest surrounding the Nile Basin and the Red Sea corridor.