The presidency of South Africa's Cyril Ramaphosa seems under threat, after a damning report from a panel of legal experts into accusations that he covered up the theft of $4m (£3.3m) in cash from his farm in 2020. A Liberian senator wants an investigation into the amount of time President George Weah has currently spent outside the country. And Nigeria has approved a policy for primary school lessons to be taught in local languages, rather than English.