Ethiopia says it has completed building a mega-dam on the Blue Nile that has long been a source of tension with Egypt and Sudan. Launched in 2011 with a $4bn (£2.9bn) budget, the dam is Africa's biggest hydro-electric plant,

Ethiopia's Prime Minister Abiy Ahmed on Thursday said a multi-billion-dollar mega-dam on the Blue Nile that has long worried neighbouring countries is complete and will be officially inaugurated in September.

Sudan and Egypt are concerned about its effect on their water supply, but Abiy says the dam will benefit them all.