Brennan rips Trump: 'Your self adoration is disgraceful'
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Former CIA Director John BrennanJohn Owen BrennanTrailer shows first look at Annette Bening as Dianne Feinstein Webb: Questions for Robert Mueller A brief timeline of Trump's clashes with intelligence director Dan Coats MORE tore into President TrumpDonald John TrumpThe Hill's Campaign Report: Democratic field begins to shrink ahead of critical stretch To ward off recession, Trump should keep his mouth and smartphone shut Trump: 'Who is our bigger enemy,' Fed chief or Chinese leader? 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."