Mr. Musk has fallen out with prominent right-wing Americans who say they are worried that their agenda may be sidelined in favor of his own — and that he is willing to silence them on X.

Musk, who has used X to amplify conspiracy theories and promote far-right talking points in the U.S., has more recently set his sights on Europe.

Fresh from pouring his money and energies into helping Donald Trump win reelection, Elon Musk has trained his sights on Europe, setting off alarm bells among politicians across the continent. The Tesla and SpaceX chief executive has endorsed the far-right Alternative for Germany,