The building of the largest hydroelectric dam in Africa has reignited a dispute about its longest river, the Nile.
Ethiopia says the five billion dollar Grand Ethiopian Renaissance Dam near the border with Sudan will be a massive boost to the economy.
Egypt fears that will be at its expense, and reduce its share of Nile water.
Egypt as condemned comments from Ethiopia's Prime Minister - this year's Nobel Peace Prize winner - that the dispute could lead to war.
So how should one of our most vital resources be managed?
Presenter: Hashem Ahelbarra
Ahmed Almufti - Former Sudanese Negotiator, Nile Waters Agreement
William Davison - Senior Analyst on Ethiopia, International Crisis Group
Allam Ahmed - Professor of Knowledge Management and Sustainable Development, University of East London
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