Former White House chief strategist Stephen Bannon said there was "zero" chance that President TrumpDonald TrumpJan. 6 panel faces double-edged sword with Alex Jones, Roger Stone Trump goes after Woodward, Costa over China Republicans seem set to win the midterms — unless they defeat themselves MORE was not aware of a controversial 2016 meeting at Trump Tower between one of his sons and a Russian lawyer, according to a new book. 

According to MSNBC, which tweeted an excerpt from Michael Wolff's upcoming book, "Fire and Fury: Inside the Trump White House," Bannon said that it was likely Donald Trump Jr.Don TrumpHow Trump uses fundraising emails to remain undisputed leader of the GOP Donald Trump Jr. joins Cameo Book claims Trump family members were 'inappropriately' close with Secret Service agents MORE took lawyer Natalia Veselnitskaya and others up to his father's office during the meeting.

“The chance that Don. Jr did not walk these Jumos up to his father’s office on the 26th floor is zero," the excerpt reads.

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Bannon, who joined Trump's campaign as chairman a couple months after the June 2016 meeting, was fired from the White House in August 2017. He's since retaken his post at the head of Breitbart News.

The suggestion that Trump was aware of the meeting that his son and other campaign officials fielded with Veselnitskaya, who reportedly has ties to the Russian government, contradicts statements from White House officials, who have claimed that the president was not told about the meeting.

Trump Jr. agreed to attend the meeting after an intermediary told him that Veselnitskaya had promised damaging information on then-Democratic presidential candidate Hillary ClintonHillary Diane Rodham ClintonRepublicans seem set to win the midterms — unless they defeat themselves Poll: Democracy is under attack, and more violence may be the future Popping the progressive bubble MORE. He has said that, instead, the lawyer discussed American adoptions of Russian children.

Former campaign chairman Paul ManafortPaul John ManafortYellen should utilize the resources available before pushing new regulations Huawei paid Tony Podesta 0K for White House lobbying FBI agents swarm Russian oligarch's DC home MORE and Trump's son-in-law Jared KushnerJared Corey KushnerWatchdog finds no money has flowed out of agency tasked by Trump admin to fight pandemic Watchdog cites 13 Trump officials who violated Hatch Act before 2020 election McCain blasts Graham for refuting funeral remark about Kushner, Ivanka Trump MORE also attended the June 2016 meeting.

Possible ties between the Trump campaign and the Russian government are the subject of a criminal investigation by special counsel Robert MuellerRobert (Bob) MuellerAn unquestioning press promotes Rep. Adam Schiff's book based on Russia fiction Senate Democrats urge Garland not to fight court order to release Trump obstruction memo Why a special counsel is guaranteed if Biden chooses Yates, Cuomo or Jones as AG MORE, who is also looking into wider Russian meddling in the 2016 election. 

So far, Manafort and one of his associates, Richard Gates, have been indicted as a result of that investigation. They are facing charges of money laundering and tax evasion, among other allegations. 

Former national security adviser Michael Flynn and George PapadopoulosGeorge Demetrios PapadopoulosTrump supporters show up to DC for election protest Trump pardons draw criticism for benefiting political allies Klobuchar: Trump 'trying to burn this country down on his way out' MORE, a former foreign policy adviser to Trump's campaign, have pleaded guilty to lying to the FBI about their contacts with Russian representatives.