Former CIA Director John Brennan John Owen BrennanJournalism or partisanship? The media's mistakes of 2016 continue in 2020 Comey on Clinton tweet: 'I regret only being involved in the 2016 election' Ex-CIA Director Brennan questioned for 8 hours in Durham review of Russia probe MORE on Monday called on members of President Trump Donald John TrumpBiden on Trump's refusal to commit to peaceful transfer of power: 'What country are we in?' Romney: 'Unthinkable and unacceptable' to not commit to peaceful transition of power Two Louisville police officers shot amid Breonna Taylor grand jury protests MORE's Cabinet to resign in protest following the president's news conference with Russian President Vladimir Putin, asking how Secretary of State Mike Pompeo Michael (Mike) Richard PompeoTreasury sanctions individuals, groups tied to Russian malign influence activities Navalny released from hospital after suspected poisoning Overnight Defense: Pentagon redirects pandemic funding to defense contractors | US planning for full Afghanistan withdrawal by May | Anti-Trump GOP group puts ads in military papers MORE, national security adviser John Bolton and chief of staff John Kelly John Francis KellyMORE "can continue in their jobs"

"I thought that there was nothing Donald Trump could say that would shock me, but I was wrong. I was just totally shocked at the performance of Donald Trump in Helsinki at a press conference with Vladimir Putin. I just found that it was outrageous," said Brennan to anchor Brian Williams on MSNBC immediately following Trump's press conference in Helsinki, Finland.

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"Even when the press gave him an opportunity to hold Russia accountable for anything, he chose to talk about Hillary Clinton Hillary Diane Rodham ClintonDemocratic groups using Bloomberg money to launch M in Spanish language ads in Florida The Hill's Campaign Report: Presidential polls tighten weeks out from Election Day More than 50 Latino faith leaders endorse Biden MORE, about his election, about servers," Brennan continued. "He criticized American citizens, Secretary Clinton, and others as opposed to really taking advantage of a world stage with all the world’s eyes upon them to point out how unacceptable Russia’s behavior and interference in our election and the elections of other democratic countries around the globe is. But he just shirked those responsibilities."

The commentary from Brennan, who serves as an MSNBC contributor, came after Trump and Putin met one-on-one for the first time. During the news conference that followed the two-hour meeting, Putin again denied that Russia interfered in the 2016 U.S. presidential election. Trump, meanwhile, contradicted his own intelligence agencies while saying 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's investigation "is a probe that has been disastrous for the country."

"I cannot understand how the national security team can continue to abide by this and how Pompeo and Bolton and Kelly can continue in their jobs," Brennan, who served under President Obama from 2013 to 2017, said.

"This, I think, rises to the point of good American patriots resigning in objection to that performance by Donald Trump. I’m at a loss of words to describe just how outrageous his words, his statements, his behavior has been ... and how Mr. Putin now is the master puppeteer of Donald Trump, the person who is in our Oval Office. Outrageous.”

Brennan took to Twitter shortly after the TV appearance to continue the sentiment, calling Trump's rhetoric "nothing short of treasonous."

Donald Trump’s press conference performance in Helsinki rises to & exceeds the threshold of “high crimes & misdemeanors.” It was nothing short of treasonous. Not only were Trump’s comments imbecilic, he is wholly in the pocket of Putin. Republican Patriots: Where are you??? — John O. Brennan (@JohnBrennan) July 16, 2018

Trump during the news conference did not condemn Russian meddling in the 2016 election, opting to agree with Putin, who said "the Russia state" was not involved.

“He just said it’s not Russia,” Trump said in echoing Putin’s denials of involvement in the U.S. election. “I will say this, I don’t see any reason why it would be.”

Trump also attempted to turn the focus of a question about Russian election meddling to the Democratic National Committee's server and the deleted emails from the private server 2016 Democratic nominee Hillary Clinton used while secretary of State.

“What happened to the server?” Trump asked. “What happened to the Clinton emails?”

Prominent news anchors and hosts on MSNBC rivals CNN and Fox condemned Trump in strong terms following the press conference.

CNN's Anderson Cooper, for example called the president's performance "disgraceful," while Fox's Neil Cavuto described it as “humiliatingly embarrassing, and just a joke" shortly after the press conference ended.

Anderson Cooper calls the Trump-Putin press conference "one of the most disgraceful performances by an American president at a summit in front of a Russian leader certainly that I've ever seen" https://t.co/Y4YnuvZOLW pic.twitter.com/LO8lLfUZho — CNN Newsroom (@CNNnewsroom) July 16, 2018