Biya, 92, the world's oldest serving head of state, has ruled the Central African country for 43 years. This is his eighth term in office . He is only the second head of state to lead Cameroon since its independence from France in 1960. Critics accuse him of ruling with an iron fist, repressing all political and armed opposition, and holding onto power through social upheaval, economic disparity and separatist violence . In Cameroon, the final results of the election cannot be announced before