Raphaël Graven, known online as Jean Pormanove, was regularly subjected to humiliation and abuse on Kick, a streaming platform.

President Trump has cast himself as a global peacemaker. His interventions have calmed some conflicts, while in others his role is less clear.

“A little restraint, please!” wrote the mayor of Les Sables d’Olonne, who is leading an effort to stop visitors from wandering the town in just their swimwear.

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