“Morning Joe” host Joe Scarborough tore into President Trump Donald John TrumpSteele Dossier sub-source was subject of FBI counterintelligence probe Pelosi slams Trump executive order on pre-existing conditions: It 'isn't worth the paper it's signed on' Trump 'no longer angry' at Romney because of Supreme Court stance MORE’s first year in office in a new op-ed for The Washington Post, warning that 2018 “will be the most consequential political year of our lives.”

Scarborough highlighted Trump’s attacks on the media, the charges brought against several of his former staffers in special counsel Robert Mueller Robert (Bob) MuellerCNN's Toobin warns McCabe is in 'perilous condition' with emboldened Trump CNN anchor rips Trump over Stone while evoking Clinton-Lynch tarmac meeting The Hill's 12:30 Report: New Hampshire fallout MORE’s probe and his claim that “both sides” were to blame for the violence at the white supremacist rally in Charlottesville, Va., during Trump's first year in office.

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“World leaders continue to watch dumbstruck as the United States retreats from organizations that were created following the allies’ victory over Hitler. Those same alliances that Trump now undermines with reckless tweets and discarded treaties carried the United States to victory in the Cold War,” Scarborough wrote.

“But this is a White House that heaps contempt on history. And so, America’s dangerous retreat from the world continues.”

Scarborough, a frequent critic of Trump who left the Republican party earlier this year, quoted British leader Winston Churchill’s World War II call for countries to band together.

“While Trump’s eroding of U.S. prestige across the globe is disturbing, it is his administration’s undermining of democratic values that poses an even greater threat to our Constitution and country,” Scarborough wrote.

“Borrowing again from Churchill, America’s constitutional norms tremble in the balance as Trump unleashes furious attacks on First Amendment protections, independent counsels and law enforcement officers who refuse to be bullied.”

Trump has expressed his admiration for Churchill in the past, including returning a bust of the leader to the Oval Office.