Cameroon: 89-year-old Paul Biya celebrates 40 years in power

Cameroon's government and its supporters are holding events this week ahead of celebrations Sunday marking President Paul Biya's 40 years in power.

Meanwhile, opposition parties are holding rallies calling for the 89-year-old Biya, the world's oldest head of state, to change what they say are unfair election laws.

On Thursday in Nanga Eboko on the outskir…