Previous US President Barack Obama has propelled a stinging assault on Donald Trump and the "insane stuff that is leaving this White House".
"This isn't ordinary, these are exceptional occasions and they are risky occasions," Mr Obama told understudies at the University of Illinois.
He required "a reclamation of trustworthiness and goodness and legitimateness in our administration".
The ex-president has stayed under the radar since he cleared out office in 2017 as of recently.
Mr Obama disclosed to Friday's honors service in Urbana, Illinois, that he had been meaning to take after the American custom of previous presidents leaving the political stage.
Be that as it may, in remarks which are probably going to rankle his successor, he propelled into a burning assault on the present Republican organization.
Mr Obama cautioned that American majority rule government relied upon his group of onlookers ending up voting in the November's congressional mid-term races.
"Presently, some of you may think I am misrepresenting when I say this decision could easily compare to any I can recollect in my lifetime," the Democrat said.
"However, only a look at ongoing features should reveal to you that this minute truly is unique."
Mr Obama made an evident reference to a New York Times article that has angered Mr Trump.
Its mysterious creator, depicted as a senior Trump organization official, professed to be with working associates to shield the nation from the present president's "most exceedingly bad tendencies".
Mr Obama stated: "They are not doing us an administration by currently advancing 90% of the insane stuff that is leaving this White House and afterward saying, 'Don't stress. We are keeping the other 10%.'"
In any case, he likewise told his group of onlookers that Mr Trump was "an indication, not the reason" of the divisions in the US.
He gashed Mr Trump's requires the US Department of Justice to explore his political adversaries.
"It ought not be a factional issue to state that we don't weight the lawyer general or the FBI to utilize the criminal equity framework as a club to rebuff our political adversaries."
The 44th leader of the US was additionally blistering about Mr Trump's underlying limitation when requested that last year censure far-right nonconformists in Charlottesville, Virginia.
"We should confront spooks, not tail them," Mr Obama said. "We should confront separation and we beyond any doubt as hell expected to stand up unmistakably and unequivocally to Nazi sympathizers."
"How hard would that be able to be? Saying Nazis are awful?"
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