Donald Trump ally Steve Bannon said French far-right party leader Jordan Bardella was “unworthy to lead France” because he was “a boy, not a man,” after Bardella canceled his scheduled speech at a conservative political event in Washington.

Bardella, the president of the National Rally party, said he decided to drop out of the Conservative Political Action Conference (CPAC) after Bannon “allowed himself a gesture alluding to Nazi ideology” during his speech there.

“Yesterday, while I was not present in the room, one of the speakers out of provocation allowed himself a gesture alluding to Nazi ideology,” Bardella said in a statement. “I therefore took the immediate decision to cancel my speech that had been scheduled this afternoon.”

Bannon denied the accusation Friday, saying the gesture was “a wave” that he regularly did at the end of his speeches “to thank the crowd,” including at a National Rally event several years prior. Speaking to a Le Point reporter, Bannon attacked Bardella for the decision to withdraw from CPAC, saying he was “wetting himself like a little child.”

The incident reflects mounting tensions between Trump allies, such as Elon Musk, and Europe’s far-right leaders, some of whom have expressed discomfort with a few of the administration’s positions.