Steve Bannon attacked Elon Musk over the billionaire’s criticism of President Donald Trump’s new AI infrastructure project—escalating the feud weeks after Bannon said he would “do anything” to keep the world’s richest person out of the White House.

Bannon is ramping up public attacks on billionaire Elon Musk amid an intensifying debate on the right about Musk’s influence in the incoming administration. In an interview with the Italian newspaper Corriere della Sera this past week,

The comments highlighted rifts within the U.S. right wing and between two men who have been influential advisers to President-elect Donald J. Trump.