In Fire and Fury: Inside the Trump White House, author Michael Wolff questions Trump's mental fitness, portraying him as child-like with a short attention span. Trump had often complained about US libel laws on the 2016 campaign trail.
Mr Bardella's remark about presidential ambitions refers to a December Vanity Fair article which said a White House run "has at least been a passing thought" for Mr Bannon.
Cohen told WSJ that Trump denies "any such occurrence". Linda Lavelle responded indignantly saying I smeared them and I responded that I don't smear but I warned her that Bannon was evil and I explained why with information then available from Breitbart News.
"Fire and Fury" contains serious accusations by Bannon against Donald Trump Jr, son of the US President, and Jared Kushner, his son-in-law, in which he considers of treason and an antipatriotic act the encounter that presumably both organized with Russian officials in 2016.
European Union offers support in favour of Iran deal amid USA reticence
Kamalvandi's comments came as European powers prepared to meet Thursday to reaffirm their support for the accord. Mr Trump formally rejected the deal in October, although the United States has not yet pulled out.
His departure from Breitbart threatens to further isolate the self-proclaimed champion of anti-Washington populism that swept Trump to power and whom Bloomberg once called "the most risky political operative in America".
The book also caused a dramatic falling out between Trump and his former adviser Stephen Bannon, who was quoted speaking ill of members of the president's family. Burck is not representing Bannon in the Mueller probe.
On Monday, deputy press secretary Hogan Gidley said Bannon's apology did not alter his standing with the president.
Bannon was chief executive of the Trump campaign in its final three months during the 2016 USA elections.
In the wake of the release of the book by author Michael Wolff, questions have been raised about Trumps mental and physical fitness.
Trump made his comments about Bannon after news broke that his former campaign chief would testify to Congress about the Russian collusion investigation.