Donald Trump. Pic/AFP

United States President Donald Trump has criticised his former chief strategist Steve Bannon, saying that the latter not only lost his job, he lost his mind too after being fired from the White House. Trump was responding to a The Guardian report, which, by citing a book, has stated that Bannon had described the meeting between the president's son and a group of Russians at Trump Tower in New York during the 2016 election campaign as 'treasonous' and 'unpatriotic'. According to the Guardian, the book, "Fire and Fury: Inside the Trump White House" by Michael Wolff, is based on hundreds of interviews, including the ones from Trump's courtiers.