Incumbent Zambian  president Edward Lungu Zambian of the Patriotic Front: he  was re-elected on August 15th  in a closely-fought vote that the opposition claimed was rigged. Photograph: Gianluigi Guercia/AFP/Getty Images

Zambia’s president Edgar Lungu has been declared the winner of an election that the main opposition claims was rigged and has vowed to challenge in c(...)