The coronation of King Charles, the sovereign of the Commonwealth, calls into question the role of the British monarch on the world stage.

In recent months, Koo, Twitter’s Indian rival, has begun advertising to Nigerians with the support of a powerful brand ambassador: President Muhammadu Buhari. The endorsement comes more than two months after Buhari banned Twitter from Nigeria, in response to the social media company deleting a controversial tweet from Buhari threatening violence against supporters of a secessionist movement in the South East.

Each Friday, I look at what the presidential contenders are saying about foreign policy. This Week: China’s effort to solve its economic woes by doubling down on exports is creating a policy challeng…

A review of Lowell Dittmer's new edited volume.