It'll be one of the largest dams in the world when complete, providing water for millions of Ethiopians.<br />But downstream from Ethiopia, Egypt and Sudan say they'll suffer.<br />And despite many rounds of negotiations, the countries can't agree a deal.<br />The African Union has, for months, tried to mediate between the three. <br />But despite its efforts, the dispute about Addis Ababa's construction of a giant hydroelectric dam on the Blue Nile, remains unresolved.<br />Cairo and Khartoum say the issue could threaten peace and security in the region, and asked the UN security council to intervene before the situation escalates.<br />But the French envoy to the UN says the world body lacks the legal expertise and there is little it can do.<br />He's called on the three countries to go back to the negotiating table<br />But will they?<br />And if not, what's next?<br />A military confrontation?
