Gabon’s main opposition parties chose former foreign minister Jean Ping as their candidate in an election on Aug. 27 against President Ali Bongo, who is standing for a second term. Ping, aged 74, is considered one of Africa’s foremost diplomats. He has served as chairman of the African Union commission and as president of the U.N. General Assembly. “I understand the gravity of the task I have been given,” Ping told thousands of cheering supporters in Libreville. “I won’t disappoint you.” Ping has an unusual history for an African politician. His father was a Chinese businessman who came to Gabon in the 1930s, married the daughter of a traditional chief and grew rich trading goods including timber and seafood. Ping came to wealth and prominence as an ally and protege of Omar Bongo, the father of Ali Bongo. But he fell out with the son and resigned from the ruling party in 2014 to become a vehement government critic.