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Retired admiral resigned from Pentagon advisory committee after writing open letter to Trump

Retired admiral resigned from Pentagon advisory committee after writing open letter to Trump
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Retired Adm. William McRaven, former head of Special Operations Command, resigned from the Pentagon's Defense Innovation Board last month after asking President TrumpDonald TrumpHead of firms that pushed 'Italygate' theory falsely claimed VA mansion was her home: report Centrists gain foothold in infrastructure talks; cyber attacks at center of Biden-Putin meeting VA moving to cover gender affirmation surgery through department health care MORE to revoke his security clearance.

Defense News first reported McRaven's exit Thursday and the Pentagon confirmed to CNN that he resigned four days after publishing his op-ed. 

In his editorial for The Washington Post, McRaven tore into the president for revoking the security clearance of former CIA Director John BrennanJohn Owen BrennanFive things to know about the new spotlight on UFOs Extraordinary explanations for UFOs look increasingly plausible Why does the hard left glorify the Palestinians? MORE, calling Brennan "one of the finest public servants I have ever known."

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"Therefore, I would consider it an honor if you would revoke my security clearance as well, so I can add my name to the list of men and women who have spoken up against your presidency," McRaven wrote. 

Brennan and Trump had clashed repeatedly prior to the president pulling his clearance as well as after.

At points, some intelligence chiefs have said Brennan has gone too far.

"John is an extraordinary servant of the country, but I think he has been incredibly critical of the president and I think that has put him in a political place which actually does more damage for the intelligence community, which is apolitical, even as he's retired," Adm. Mike Mullen told "Fox News Sunday" last month.

He was joined by former Director of National Intelligence James ClapperJames Robert ClapperDomestic security is in disarray: We need a manager, now more than ever Will Biden provide strategic clarity or further ambiguity on Taiwan? 140 national security leaders call for 9/11-style panel to review Jan. 6 attack MORE, one of the president's frequent critics. 

"John and his rhetoric have become an issue in and of itself," former Director of National Intelligence James Clapper told CNN's "State of the Union" last month.

Clapper's comments were in response to an op-ed Brennan penned saying Trump colluded with Russia in his 2016 campaign, despite presenting no evidence Trump had done so.