Dan Bongino slammed John Brennan on "Fox & Friends" on Saturday, claiming the former CIA director has "disgraced" himself and the entire intelligence community.

Brennan has been an outspoken Trump critic, and he has even speculated that the president could be susceptible to blackmail by Russians.

In an op-ed in the Washington Post, Brennan wrote that Trump's "use of falsehoods, his mean-spirited and malicious behavior, and his self-absorption" will hurt America for years to come.

Bongino, a former Secret Service agent and current NRATV contributor, said Brennan's remarks should be taken with a grain of salt because he's already been proven to be a "liar."

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"No single figure in American history has done more to discredit the intelligence community than this liar," Bongino said. "Not only is he a liar, he's a liar about being a liar!"

Bongino pointed to reports that Brennan has changed his tune on the infamous anti-Trump dossier, including what he knew about it and if it was used as material in his bureau's assessment of Russian election meddling.

"He said he didn't know about the dossier, yet he briefed people up on the Hill about elements of the dossier that then appeared in a letter to the FBI," Bongino said. "He's lying! He's just making this up."

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