Ethiopian Prime Minister Hailemariam Desalegn has rejected a call by Egypt for a World Bank arbitration in a dispute over a hydroelectric dam Addis Ababa is building along its share of the Nile. With discussions deadlocked for months over the wording of a study on its environmental impact, Egyptian Foreign Minister Sameh Shoukry proposed late last month that the World Bank be allowed to help settle the dispute. “Seeking professional support is one thing, transferring (arbitration) to an institution is another thing. So we told them that this is not acceptable with our side,” the state-run Ethiopian News Agency quoted Hailemariam as saying. The agency, which spoke to Hailemariam upon his return from Cairo on Friday, said he rejected the proposal and said, “it is possible to reach agreement ... through cooperation and with the spirit of trust.”