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 issued fresh criticism of 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 on Friday night, calling him “drunk on power” after he revoked Brennan's security clearance this week.

“I think right now, this country is in a crisis in terms of what Mr. Trump has done and is liable to do,” Brennan told MSNBC’s Rachel Maddow.

“And so, are the Republicans on the Hill — who have given him a pass — going to wait for a disaster to happen before they actually find their backbones and spines, to speak up against somebody who clearly, clearly is not carrying out his responsibilities with any sense of purpose and common sense from the standpoint of national security,” Brennan added.

Brennan to @Maddow: Are the Republicans on the Hill ... going to wait for a disaster to happen before they actually find their backbones to speak up against somebody who clearly is not carrying out his responsibilities with any sense of purpose and common sense? pic.twitter.com/zzp8N1dA5s — MSNBC (@MSNBC) August 18, 2018

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Brennan also told Maddow that he was considering his legal options after Trump pulled his security clearance, saying he wanted "to prevent this type of abuse by Donald Trump in the future.”

Trump sent shockwaves through the intelligence community on Wednesday when he revoked Brennan’s clearance, with the White House signaling that it is preparing to revoke the clearance of several other former intelligence officials as well.

Numerous former intelligence officials and national security heads have decried Trump's move as retaliation against Brennan, who is a frequent critic of the president.

The White House denied that revoking the clearance was a retaliatory move, saying it was done in response to Brennan’s “lying” and “increasingly frenzied commentary.”