Brennan interviewed as 'witness' in Russia review probe, spokesman says

Brennan's involvement in the investigation into Russian election interference and frequent public criticism of President Donald Trump has drawn the president's ire. Trump has cited Brennan as one of several national security officials he holds responsible for special counsel Robert Mueller's subsequent investigation that consumed the early years of Trump's presidency.

Brennan, according to Shapiro, questioned Durham on why the CIA's findings are being scrutinized by the Justice Department given that reports released by Mueller and a bipartisan Senate intelligence committee validated its findings.

"Brennan also told Durham that the repeated efforts of Donald Trump & William Barr to politicize Mr. Durham's work have been appalling & have tarnished the independence & integrity of the Department of Justice, making it difficult for DOJ professionals to carry out their job," Shapiro added.

Shapiro said that it's Brennan's "fervent hope that the results of the Durham review will be apolitical and not influenced by personal or partisan agendas."

Brennan, who served under President Barack Obama, was one of the intelligence officials who signed off on an intelligence assessment that determined Russia interfered to help then-candidate Trump beat Hillary Clinton in the 2016 presidential election.

Trump stripped Brennan of his security clearance in 2018, saying his "erratic conduct and behavior" posed risks. The move was widely criticized by former intelligence officials.

Durham's probe, which Trump allies hope could boost the president before the November election, secured its first guilty plea on Wednesday when a former FBI attorney pleaded guilty to altering an email used to seek surveillance warrants against former Trump campaign adviser Carter Page.