Voters cast their ballots Sunday in Cameroon's presidential elections, which 92-year-old Paul Biya, the world's oldest serving head of state, is expected to win, extending his already 43-year grip on power. Biya faces 11 opponents, including former employment minister Issa Tchiroma Bakary, 79, who has generated unexpected enthusiasm among voters in the central African nation, where half the population is under 20. FRANCE 24's Indira Eteng reports from Yaoundé.