Cameroon's Paul Biya has the distinction of being 'the world's oldest sitting president' and yet at age 92, he is seeking to run for an eighth term, that will see him serve until he is almost 100 years old. How much popular support does he have, and how strong is the opposition?

Sudan's newly appointed prime minister, Kamal Idris, has named his cabinet ministers who will form his "government of hope". How will they function in the country still in the grip of war?

And after the announcement by Ethiopia's Prime Minister Abiy Ahmed that the Grand Ethiopian Renaissance Dam (GERD) is complete and will be officially inaugurated in September, why has US President Donald Trump weighed in on the long-running dispute between Ethiopia and Egypt over the giant construction?

Presenter: Charles Gitonga Producers: Tom Kavanagh, Sunita Nahar and Mark Wilberforce Technical Producer: Gabriel O'Regan Senior Producers: Patricia Whitehorne and Karnie Sharp Editors: Andre Lombard and Alice Muthengi

Focus on Africa: Cameroon's president seeks re-election at age 92