John Dean, a key figure in the Watergate scandal, said Thursday that President Trump Donald John TrumpSteele Dossier sub-source was subject of FBI counterintelligence probe Pelosi slams Trump executive order on pre-existing conditions: It 'isn't worth the paper it's signed on' Trump 'no longer angry' at Romney because of Supreme Court stance MORE's former attorney Michael Cohen appears to be looking to strike a deal with prosecutors and that it doesn't "bod[e] well" for Trump.

"I don’t think it is boding well for the president," Dean said on CNN. "It’s clear, as I read the situation, that Michael Cohen is looking for a deal and he is upping the stakes."

"When I became a witness there was a huge effort to discredit me. It was just my word against Nixon's until the tape came out." -John Dean, who served as WH Counsel to Pres. Nixon during Watergate, weighs in on report Cohen claims Trump knew in advance of 2016 Trump Tower meeting pic.twitter.com/PXrzjwnSS2 — CNN Tonight (@CNNTonight) July 27, 2018

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Dean, the former White House counsel under President Nixon, became a key witness in the Watergate scandal after pleading guilty to a single count of obstruction of justice.

His comments on CNN came just after the network reported that Cohen, who is under federal investigation for his business dealings, is willing to tell special counsel Robert Mueller Robert (Bob) MuellerCNN's Toobin warns McCabe is in 'perilous condition' with emboldened Trump CNN anchor rips Trump over Stone while evoking Clinton-Lynch tarmac meeting The Hill's 12:30 Report: New Hampshire fallout MORE that Trump knew of and approved a controversial meeting between his eldest son, Donald Trump Jr. Don John Trump'Tiger King' star Joe Exotic requests pardon from Trump: 'Be my hero please' Zaid Jilani discusses Trump's move to cancel racial sensitivity training at federal agencies Trump International Hotel in Vancouver closes permanently MORE, and a Russian attorney in 2016.

That meeting was reported last year by The New York Times. The attorney, Natalia Veselnitskaya, had reportedly offered dirt to the Trump campaign on then-Democratic presidential candidate Hillary Clinton Hillary Diane Rodham ClintonFox News poll: Biden ahead of Trump in Nevada, Pennsylvania and Ohio Trump, Biden court Black business owners in final election sprint The power of incumbency: How Trump is using the Oval Office to win reelection MORE.

Trump, his aides and his attorneys have all denied that the president knew of the meeting before the Times approached him about it last year.

According to the CNN report, Cohen does not have evidence to back up his claim but is willing to speak with Mueller about his assertion.

Dean recalled Thursday that Nixon had sought to discredit his own account during Watergate, until recordings of the president's conversations were released.

"When I became a witness, there was a huge effort to discredit me," Dean recalled. "And it was just my word against Nixon’s until the tape came out, and they worked mightily to try to discredit me."