President Donald Trump tore into former CIA Director John Brennan as a "very bad person" after the former top spymaster accused him of treason and invoked impeachment.

Brennan, who describes himself as a "nonpartisan American who is very concerned about our collective future," blasted Trump's news conference with Russian President Vladimir Putin.

"[Trump's] performance in Helsinki rises to and exceeds the threshold of high crimes and misdemeanors. It was nothing short of treasonous," Brennan said on Twitter.

"Not only were Trump's comments imbecilic, he is wholly in the pocket of Putin," the former CIA boss added.

Carlson asked Trump about the remarks, to which Trump responded by calling Brennan "a very bad person."

He added that Brennan, embattled FBI Agent Peter Strzok and his extramarital lover Lisa Page, and former FBI brass Jim Comey and Andrew McCabe exhibit "deception and lies."

"These are people who are truly bad people. They're being exposed for who they really are," Trump said.

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Carlson said the neocon and generically Washingtonian view is that the U.S. is "forever in conflict with Russia" and that "anyone who doesn't believe that is betraying the U.S."

Trump said that Russia sacrificed tens of million of its own people in the service of the Allied Powers, which included the United States, during World War II.

"[They] helped us win the war... I'm not pro-Russia or pro-anybody. I just want this country to be safe," he said.

Trump echoed Carlson's criticism that NATO's current form allows for the United States to be compelled to help tiny Balkan nations like Montenegro if they are attacked.

He said he has nothing against the newest member of NATO but that such conflicts could end badly for the U.S.

"Congratulations, you're in World War III," Trump said. "That was the way [NATO] was set up."

Watch more above, and watch part two below.

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