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A controversial deal has been signed to share the waters of the world's longest river.

But Egypt and Sudan are not happy at four African countries signing the new deal on the Nile.

Rwanda, Ethiopia, Uganda and Tanzania signed the new framework on Friday while Kenya issued a support statement.

Ten nations share the resources of the river.

Colonial-era agreements gave the biggest share of water to the two downstream countries, Egypt and Sudan.

But as Al Jazeera's Mohamed Vall explains, upstream nations are now pushing for a greater share.

Source: Al Jazeera