Story highlights The President lashes out, without restraint, at anyone who doesn't fulfill his objectives, and that helps explain his failing presidency, Julian Zelizer writes

Trump's attacks on Sessions, Comey and Mueller are remarkable, he writes

Julian Zelizer, a history and public affairs professor at Princeton University and a CNN analyst, is the author of "The Fierce Urgency of Now: Lyndon Johnson, Congress, and the Battle for the Great Society." He's co-host of the "Politics & Polls" podcast. The opinions expressed in this commentary are his own.

(CNN) The new moniker for President Donald Trump should be the "blamer in chief." When confronted with challenges and problems, there is nothing the President likes to do more than lash out against someone else.

In his interview with the New York Times , President Trump seemed like a leader who is fed up with his job. He said he would never have appointed Attorney General Jeff Sessions, one of his longest and most loyal supporters in politics, had he known Sessions would recuse himself concerning the Russia investigation.

He attacked the FBI director he fired, James Comey, as someone who had tried to intimidate him to keep his job, while saying that Special Counsel Robert Mueller's office is compromised as a result of conflicts of interest. "There are very few Republicans in Baltimore, if any," the President said about the hometown of Deputy Attorney General Rod Rosenstein, who appointed Mueller special counsel to investigate the Russia matter.

This is saying a lot from a President who has two children running a massive global business while their father sits in the Oval Office. This interview came shortly after President Trump threatened Republican Senator Dean Heller's career if he did not vote for a bill that the Congressional Budget Office estimates would leave 32 million Americans without health insurance. You could watch Heller's nervous laugh and just imagine what he thought about his lunch partner.

Trump's public rebukes were pretty stunning. The President says the kinds of things about his own Cabinet in public that other presidents would reserve for behind the scenes. This President has absolutely no restraint when it comes to attacking anyone who crosses his path. His own attorney general, the former FBI director and the special counsel now find themselves, at least temporarily, in the space occupied by the entire journalistic community -- other than Fox News -- which he has spent much of his time dismissing as "fake news" for its critical coverage.

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