Sen. Jeff Flake Jeffrey (Jeff) Lane FlakeHow fast population growth made Arizona a swing state Jeff Flake: Republicans 'should hold the same position' on SCOTUS vacancy as 2016 Republican former Michigan governor says he's voting for Biden MORE (R-Ariz.) on Thursday blasted President Trump Donald John TrumpBiden on Trump's refusal to commit to peaceful transfer of power: 'What country are we in?' Romney: 'Unthinkable and unacceptable' to not commit to peaceful transition of power Two Louisville police officers shot amid Breonna Taylor grand jury protests MORE's rhetoric during his summit with Russian President Vladimir Putin, calling it an "Orwellian moment" and the result of his colleagues indulging in "myths and fabrications" on Trump administration policies.

"Well, we saw earlier this week in Helsinki what was a truly an Orwellian moment," Flake said from the Senate floor.

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"I will say that if ever there was a moment to think not of your party but of your country, this is it. This is a not a moment for spin, deflection, justification, circling the wagons, forgetting, moving along to the next news cycle or for more of Orwell’s doublespeak," Flake said, referring to George Orwell's dystopian novel "1984."

Sen. @JeffFlake: "Well, we saw earlier this week in Helsinki what was a truly an Orwellian moment."



Full video here: https://t.co/Jk5rOpnh1i pic.twitter.com/lCD0WmTw3I — CSPAN (@cspan) July 19, 2018

He added that Trump's remarks at a joint press conference after the summit in Helsinki, Finland, where the president refused to denounce Russia's election meddling and appeared to echo Putin's denials, gave lawmakers a "dose of reality" about Trump's policies.

"We have indulged myths and fabrications, pretended that it wasn’t so bad, and our indulgence got us the capitulation in Helsinki. We in the Senate who have been elected to represent our constituents cannot be enablers of falsehoods," Flake continued.

Sen. Jeff Flake: "We have indulged myths and fabrications, pretended that it wasn't so bad. And our indulgence got us the capitulation in Helsinki." https://t.co/r3gYYfGUnu pic.twitter.com/SsbUt5JC50 — ABC News (@ABC) July 19, 2018

Flake's speech came shortly before another senator, Majority Whip John Cornyn John CornynThe Hill's Campaign Report: GOP set to ask SCOTUS to limit mail-in voting Liberal super PAC launches ads targeting vulnerable GOP senators over SCOTUS fight Senate GOP faces pivotal moment on pick for Supreme Court MORE (R-Texas), blocked the passage of a resolution from Flake and Sen. Christopher Coons Christopher (Chris) Andrew CoonsMurkowski: Supreme Court nominee should not be taken up before election Battle lines drawn on precedent in Supreme Court fight Sunday shows - Ruth Bader Ginsburg's death dominates MORE (D-Del.) that would have given Senate support to the intelligence community's finding that Russia interfered in the 2016 presidential election.

Flake, who is retiring after 2018, has emerged as one of Trump's most vocal GOP critics, especially on foreign policy. But Trump sparked widespread backlash on Monday when he refused to denounce Russia's election meddling.

Trump tried to walk back the comments on Tuesday when he said he accepted the intelligence community's finding, but he added that it could be "other people" too.

"What we saw last week in Helsinki is what happens when you wage war on objective reality for two solid years, calling real things fake and fake things real, as if conditioning others to embrace this same confusion," Flake said on Thursday.

He added that the reaction to Trump's comments ranged from "heartbreak to horror" and that Trump failed "to summon reality in the face of a despot and in defense of your country."

"To reject these findings ... is an act of will on the part of the president, and that choice now leaves us contemplating a dark mystery: Why did he do that? What would compel our president to do such a thing?" Flake questioned.