The relationship between Eritrea and Ethiopia is arguably the most important and volatile in East Africa. The fall-out between the former brothers in arms initiated a two-year long border war in 1998, which claimed around 100,000 causalities, cost billions of dollars, and continues to serve as the main source of regional instability in the Horn of Africa.

The fighting was brought to an end with the signing of the Algiers Peace Agreement and establishment of the Ethiopia-Eritrea Border Commission (EEBC) in 2000. However, Ethiopia’s refusal to implement the rulings of the EEBC prior to negotiations and Eritrea’s insistence on an unconditional and immediate demarcation of the border have locked the two governments in an intractable stalemate .

Despite the official cessation of hostilities in 2000, Ethiopia and Eritrea continued their war through proxies by supporting various rebel movements throughout the Horn of Africa. In this way, they have been fuelling conflict and instability in each other’s countries as well as the wider region.

Thirteen years after the Algiers Peace Agreement, domestic conditions in both states and the regional geopolitical equation have undergone substantial changes. (click link below  to read more:-

.Ethiopia and Eritrea: Brothers at war no more – Yahoo News Maktoob.