Brennan rips Trump: 'Your self adoration is disgraceful'
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Former CIA Director John BrennanJohn Owen BrennanFederal prosecutor looking into Brennan's role in Russian interference findings: report FISA court's rebuke of the FBI: It broke or ignored the rules and our rights Where was American counterintelligence? MORE tore into President TrumpDonald John TrumpSchiff pleads to Senate GOP: 'Right matters. And the truth matters.' Anita Hill to Iowa crowd: 'Statute of limitations' for Biden apology is 'up' Sen. Van Hollen releases documents from GAO investigation MORE after the president shared a right-leaning poll that showed his approval rating rising above 50 percent.

"I served 6 Presidents, 3 Rs & 3Ds. I directly supported Clinton, Bush 43, and Obama," Brennan tweeted late Wednesday night.

"While I didn't agree with all their policy choices, I admired and respected all of them, as they put country above their personal interests. Not so with you, as your self adoration is disgraceful."

The tweet came after Trump shared an article from Breitbart News citing a Rasmussen poll that showed Trump with a 51 percent approval rating. The article says Trump's approval ratings "keep rising."

Several other polls have shown Trump with lower approval ratings. According to the RealClearPolitics average of polls, Trump's approval rating is at 41.8 percent.

Brennan, who served as CIA director during the Obama administration, has in the past been critical of Trump and his policy decisions.

Earlier this month, he called Trump "unstable, inept, inexperienced, and also unethical."