Webb argued that Brennan does not require a security clearance to go on television and wage a "partisan battle" against Trump and he is still empowered to say what he pleases. Ohr knows the co-founder of Fusion GPS-the firm hired by the Clinton campaign to do opposition research on Trump, according to CBS.
The president commented on the issue as he left the White House to travel to Bedminster, New Jersey.
He denied that he was trying to silence Brennan, a frequent critic of the president.
FILE - Former CIA Director John Brennan testifies on Capitol Hill in Washington, May 23, 2017.
White House spokeswoman Sarah Sanders announced Wednesday Brennan's security clearance had been revoked. It was signed by six former CIA directors, five former CIA deputy directors and a former director of National Intelligence.
Others who have earned their security clearance are also speaking out against the move.
"This action is quite clearly a signal to other former and current officials", the letter says. He is a man of unparalleled integrity, whose honesty and character have never been in question, except by those who don't know him.
Mr Trump on Wednesday openly tied his decision to strip Mr Brennan of his clearance - and threaten almost a dozen other former and current officials - to the ongoing investigation into Russian election meddling and possible collusion with his campaign.
In an interview with The Wall Street Journal, Trump admitted his decision on Brennan's clearance was linked to the ongoing federal probe into possible collusion between his campaign and Russian Federation to influence the 2016 election.
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She already released tapes of discussions with the president and Chief of Staff John Kelly. Trump seems surprised in the recording and claims he did not know about Kelly's decision.
"So, I think it's something that had to be done", Trump said of taking away Brennan's clearance. And, per an analysis at the Washington Post, he also knows former British spy Christopher Steele, who compiled the infamous dossier alleging ties between Trump and Russian Federation.
Eventually, Hemmer brought up the Trump-world talking point that Brennan was responsible for the secret investigations into the Trump campaign in 2016.
She only cited what she called Brennan's "erratic conduct and behavior" that "has tested and far exceeded the limits of any professional courtesy that may have been due to him".
"There's no silence. If anything, I'm giving them a bigger voice", Trump said.
He had high hopes for Trump as president, he writes, but he has been let down.
McRaven then challenged Trump to revoke his clearance also. Bottom row from left are former FBI Deputy Assistant Director Peter Strzok, former Deputy Attorney General Sally Yates and former National Intelligence Director James Clapper.
In a striking rebuke, more than a dozen former top US intelligence officials released a sharply-worded letter late Thursday describing Trump's decision earlier this week to revoke the clearance of former CIA director John Brennan as a blatant attempt to "stifle free speech" and send an "inappropriate and deeply regrettable" signal to other public servants.
"In terms of Mr. Brennan, I see many people saying that this is nakedly political because he's a Trump critic".
Among them are former CIA Director William Webster, who was appointed to that post by President Ronald Reagan; Gen. David Petraeus, another former CIA director whom Trump had considered for a position in his own cabinet; and Gen. Michael Hayden, a former director of the CIA and NSA.