Paul Kagame understands the value of the visual image. He loves being snapped glad-handing a dignitary at the World Economic Forum in Davos – this month, it was Ukraine’s president, Volodymyr Zelenskiy. That’s only bettered by posing back home for a selfie with former England footballer Sol Campbell – Kagame sponsors three of Europe’s top teams – who recently named a baby gorilla. Both images, he knows, send out a message: “I’m a dynamic African president who hangs out with sexy, important people.” View image in fullscreen Rwandan leader Paul Kagame meets Ukrainian president Volodymyr Zelenskiy at the World Economic...