John Bolton, the former national security adviser who is a key figure in the Ukraine scandal and impeachment inquiry, has a book deal.

The hawkish Bush-era veteran, Trump’s third national security adviser, left the White House in September over disagreements with the president. According to the Associated Press, which cited three publishing officials with knowledge of negotiations, he reached his book deal over the past few weeks with Simon & Schuster.

Two of the officials said the deal was worth about $2m. Bolton was represented by the Javelin literary agency, whose clients include former FBI director James Comey and the anonymous Trump administration official whose book, A Warning, comes out on 19 November.