EU Regulator Says Musk Must Follow Rules to Keep Operating in Europe

A top European Union regulator cautioned that social-media giant Twitter Inc. will need to follow the bloc’s new rules for tackling illegal and harmful content online if it wants to keep operating there, marking a possible challenge to Elon Musk’s plans to take a more hands-off approach to content moderation. Thierry Breton, EU internal market commissioner, said in an interview with The Wall Street Journal that it’s his job to make sure companies, including Twitter, understand their obligations in Europe.