4) Abdelaziz Bouteflika (Age: 80)

Algerian politician Abdelaziz Bouteflika has been the President of Algeria since 27 April 1999. He was reelected for the fourth term in 2014. He was born on 2 March 1937 at Oujda, Morocco. He belongs to the National Liberation Front.

3) Paul Biya (Age: 84)

Paul Biya is the President of Cameroon. He was born in the village of Mvomeka’a on 13 February 1933. He belongs to the People’s Democratic Movement. He rose to prominence under President Ahmadou Ahidjo and was sworn in as the President on 6 November 1982. He was prime minister then president; in total 40 years, making him the longest serving political leader in Africa.