A general view of the Blue Nile river as it passes through the Grand Ethiopian Renaissance Dam (GERD),  near Guba in Ethiopia, on December 26, 2019. - The Grand Ethiopian Renaissance Dam, a 145-metre-high, 1.8-kilometre-long concrete colossus is set to become the largest hydropower plant in Africa.
Across Ethiopia, poor farmers and rich businessmen alike eagerly await the more than 6,000 megawatts of electricity officials say it will ultimately provide. 
Yet as thousands of workers toil day and night to finish the project, Ethiopian negotiators remain locked in talks over how the dam will affect downstream neighbours, principally Egypt. (Photo by EDUARDO SOTERAS / AFP) (Photo by EDUARDO SOTERAS/AFP via Getty Images)