Trump questioned Brennan's credibility, citing a 2014 incident in which the Central Intelligence Agency head denied to Congress that Central Intelligence Agency officials under his supervision had improperly accessed the computer files of congressional staffers.
"If he chooses to do it for political reasons, I think that's a awful precedent, and it's a very sad commentary, and it's an abuse of the system", Clapper said last month when it first emerged that Trump was weighing revoking the clearances of former officials.
Trump's statement said Brennan had engaged in "increasingly frenzied commentary" and abused his access to classified information by using it to "sow division and chaos".
After eight years of enjoying President Barack Obama's solid support and defense to do pretty much anything he chose - including hacking into the computers of the Senate Intelligence Committee - Brennan now lacks what, here in Washington, we refer to as a "Rabbi" with strong incentive to advance and protect you.
He may have lost his right to view classified material but he's gained something far more lucrative: Petty martyrdom at Trump's hands. Brennan responded to the move on Twitter within hours of the announcement.
Later, in an interview with The Wall Street Journal, Trump drew a direct connection between the Russian Federation investigation and his decision, citing Brennan as among those he held responsible for the investigation.
Trump calls the investigation a "witch hunt".
All the officials in question have been frequent critics of Trump.
It was an angry Paul who last month called for Brennan's clearance to be yanked, after Brennan called Trump's appearance at a news conference with Russian leader Vladimir Putin "nothing short of treasonous".
Mr. Brennan tweeted that his security clearance being revoked is part of a broader effort by Mr. Trump to "suppress freedom of speech and punish critics". While I had deep insight into Russian activities during the 2016 election, I now am aware - thanks to the reporting of an open and free press - of many more of the highly suspicious dalliances of some American citizens with people affiliated with the Russian intelligence services.
Traditionally, former officials maintain their security clearance to advise their successors, but Trump argued there is little utility in allowing Brennan to keep his clearance.
McCabe is a former FBI deputy director who led the investigation into Clinton's email practices.
Director of National Intelligence Dan Coats was reportedly not consulted on the revocation.
Lisa Page, an Federal Bureau of Investigation lawyer.
"I don't plan to stop speaking when I'm asked my views on this administration", said Clapper on CNN.
"An enemies list is ugly, undemocratic and un-American".
The statement added that Mr Trump was also reviewing access to classified information for nine other high-ranking officials, all of whom have criticised the president.