CNN political analyst and former Obama senior adviser David Axelrod said Friday that President Trump Donald John TrumpOmar fires back at Trump over rally remarks: 'This is my country' Pelosi: Trump hurrying to fill SCOTUS seat so he can repeal ObamaCare Trump mocks Biden appearance, mask use ahead of first debate MORE's insults of former Secretary of State Rex Tillerson Rex Wayne TillersonGary Cohn: 'I haven't made up my mind' on vote for president in November Kushner says 'Alice in Wonderland' describes Trump presidency: Woodward book Conspicuous by their absence from the Republican Convention MORE are not surprising but do "continue a disturbing portrait of the way the president does his business."

The perspective from Axelrod, who also hosts a weekend program on the network, comes after Tillerson had said in an interview with CBS's Bob Schieffer at a fundraiser in Houston that Trump was "pretty undisciplined, doesn't like to read, doesn't read briefing reports."

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The former ExxonMobil CEO also said the president often asked him to do things that may have been in violation of the law.

The president responded Friday with a tweet calling Tillerson “dumb as a rock” and “lazy as hell,” while praising Secretary of State Mike Pompeo Michael (Mike) Richard PompeoOvernight Defense: Pentagon redirects pandemic funding to defense contractors | US planning for full Afghanistan withdrawal by May | Anti-Trump GOP group puts ads in military papers Overnight Defense: House Democrats unveil stopgap spending measure to GOP opposition | Bill includes .6B for new subs | Trump issues Iran sanctions after world shrugs at US action at UN Navalny calls on Russia to return clothes he was wearing when he fell ill MORE.

Mike Pompeo is doing a great job, I am very proud of him. His predecessor, Rex Tillerson, didn’t have the mental capacity needed. He was dumb as a rock and I couldn’t get rid of him fast enough. He was lazy as hell. Now it is a whole new ballgame, great spirit at State! — Donald J. Trump (@realDonaldTrump) December 7, 2018

Axelrod told CNN's Brooke Baldwin that while he understood why "the president would be irritated to have a former member of his Cabinet speaking out in that way," he also said, "in a certain, way you could anticipate Trump responding in the manner he did."

"You have to wonder why people accept these jobs [in the Trump administration] ... knowing that if things go south, and they almost always do, it seems, that you are at some time or another going to be on the other end of one of these," Axelrod explained. "But the things that Tillerson said, though not surprising, continue a disturbing portrait of the way the president does his job. That’s probably what we should focus on.”

Trump has called others "dumb as a rock" in the past, including 2016 GOP opponent former Florida Gov. Jeb Bush, MSNBC's Joe Scarborough, CNN's Don Lemon, The Blaze's Glenn Beck, Republican strategist Rick Wilson and HBO "Real Time" host Bill Maher.