The US sees an “urgent” need for Egypt and Ethiopia to come to an agreement regarding the filling and operating of the Grand Ethiopian Renaissance Dam, US special envoy to the Horn of Africa Jeffrey Feltman said during a speech at the US Institute of Peace (watch, runtime: 1:01:29). African Union-led negotiations between Egypt, Ethiopia and Sudan have been on hiatus for months, with the three countries still unable to agree on who should mediate a new round of talks.