What to know

• Cameroonian President Paul Biya returned to the country on Thursday after a 73-day absence, with local media reporting the 93-year-old had been in Geneva with his family and close aides. The country's opposition criticised Biya's long absence, saying he had le...S1
• Cameroon’s President Paul Biya has returned to the country after a more than two-month absence that has fuelled fierce debate about his ability to rule after 44 years in power. Biya, who at the age of 93 is the world’s oldest serving head of state, landed in Y...S2