The state-affiliated Fana Broadcasting Corporate did not provide details on the agreement.
Landlocked Ethiopia used an oil refinery located in Assab port for its domestic oil needs before a two-year war over the demarcation of the border broke out between the two countries in 1998, leaving some 80,000 dead before settling into a bitter cold war.
In a surprise move in June, Ethiopia's new reformist Prime Minister Abiy Ahmed announced he would finally accept a 2002 United Nations-backed border demarcation, paving the way for peace between the two nations.
Reciprocal visits by the two nations' leaders led to the resumption of flights between their capitals as well as the opening of embassies and phone lines.
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