Ministers from Egypt, Sudan and Ethiopia are holding talks over disputes related to the world’s longest river.
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Egypt, which depends on the Nile for water, is worried about a dam being built upstream by Ethiopia.
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The $5bn dam will be the largest in Africa and Ethiopia wants it to produce electricity for 70 percent of its population.
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But Egypt, which relies on the Nile for 90 percent of its water supply, fears the dam would divert enough water to destroy half of the country’s farmland.
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Al Jazeera’s Bernard Smith explains.