Egypt, Sudan and Ethiopia failed to make progress in the latest round of African Union-led talks to resolve their years-long dispute over a controversial dam that Ethiopia is building on the Blue Nile River. Foreign and irrigation ministers of the three nations met in Kinshasa, the capital of the Democratic Republic of Congo, the current chair of the African Union. That round of talks sought to find an agreed-on approach to resume negotiations on the filling and operation of the Grand Ethiopia Renaissance Dam. However, the four days of meetings concluded without a breakthrough after Ethiopia rejected a Sudanese proposal, backed by Egypt, to include international mediators in the talks, Egypt and Sudan said. Egypt's top diplomat said they would again take the dispute to the U.N. Security Council.