President Donald Trump is preparing to sue the BBC for $1 billion after the U.K. broadcaster’s flagship current affairs program “doctored” a speech he delivered on Jan. 6, 2021.

The president sent a letter to the corporation on Monday threatening legal action over the row, which has already led to the resignations of two senior BBC executives.

Director-General Tim Davie and Deborah Turness, the chief executive of BBC News, both quit on Sunday amid mounting criticism of the broadcaster’s handling of the controversy.

In a post on Truth Social, Trump welcomed the “corrupt” pair’s departures and accused the BBC of trying to “step on the scales of a presidential election.”

Trump is demanding the BBC apologize, issue a retraction and “appropriately compensate” him.