Ex-CIA chief Brennan: Trump whistleblower 'deserves our praise & gratitude'

Former CIA chief and vocal Trump critic John BrennanJohn Owen BrennanWhere was American counterintelligence? Krystal Ball: Yang's MSNBC boycott shows network has 'officially lost the left' Trump predicts 'historic' conclusions from DOJ's watchdog report on 'spying' MORE said Thursday he believes the person who filed a whistleblower complaint against President TrumpDonald John TrumpRepublicans aim to avoid war with White House over impeachment strategy New York Times editorial board calls for Trump's impeachment Trump rips Michigan Rep. Dingell after Fox News appearance: 'Really pathetic!' MORE "deserves our praise and gratitude."

“Democrats & Republicans (those who have a conscience) need to work together to prevent desperate moves by Trump that could wreak further havoc,” Brennan tweeted.

The nine-page whistleblower complaint was shared with the public by the House Intelligence Committee earlier Thursday. It raises allegations about the July 25 call between Trump and Ukrainian President Volodymyr Zelensky, in which the leaders discussed former Vice President Joe BidenJoe BidenNew York Times editorial board calls for Trump's impeachment Graham invites Giuliani to testify about recent Ukraine trip Booker leads other 2020 Dems in petition urging DNC to change debate qualifications MORE and his son, Hunter Biden.

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The complaint also accuses the Trump administration of “efforts to restrict access to records related to the call,” in addition to accusations surrounding Trump’s personal attorney Rudy GiulianiRudy GiulianiGraham invites Giuliani to testify about recent Ukraine trip Judge orders State Dept. to search for and provide more Ukraine docs DOJ releases memos backing Trump immunity claims ahead of impeachment vote MORE's meetings with Ukrainian officials.

The allegations are the subject of the formal impeachment inquiry against Trump launched by House Speaker Nancy PelosiNancy PelosiUSMCA is nice but no model Anti-impeachment Democrat poised to switch parties Grassley urges White House to help farmers in year-end tax talks MORE (D-Calif.) Tuesday.

Democratic lawmakers have slammed the president over the last week over the allegations, and some GOP lawmakers have also announced their alarm over the complaint, including Sen. Ben SasseBenjamin (Ben) Eric SasseSenators zero in on shadowy court at center of IG report Live coverage: DOJ inspector general testifies on Capitol Hill FCC votes to bar use of its funds to purchase Huawei, ZTE equipment MORE (Neb.) and Reps. Elise StefanikElise Marie StefanikKoch campaign touts bipartisan group behind ag labor immigration bill Lawmakers introduce bipartisan bill to allow new parents to advance tax credits CNN's Bianna Golodryga: 'Rumblings' from Democrats on censuring Trump instead of impeachment MORE (N.Y.) and Will HurdWilliam Ballard HurdSunday Talk Shows: Lawmakers look ahead to House vote on articles of impeachment, Senate trial Congressional Hispanic Caucus campaign arm endorses two Texas Democrats Group of veterans call on lawmakers to support impeachment, 'put country over politics' MORE (Texas).

Trump has spoken out multiple times about the allegations over the last week. He tweeted Thursday attacking House Intelligence Chairman Adam SchiffAdam Bennett SchiffSunday Talk Shows: Lawmakers look ahead to House vote on articles of impeachment, Senate trial Supreme Court takes up fight over Trump financial records Democrats approve two articles of impeachment against Trump in Judiciary vote MORE (D-Calif.).

This is not the first time Brennan has spoken out to criticize Trump. After the president criticized top intelligence leaders earlier this year, Brennan said the move showed “the extent of [Trump’s] intellectual bankruptcy."

Last year, Brennan called Trump’s decision to pull U.S. troops from Syria an example of his “impulsive and self-satisfying ‘gut.’”