Former Secretary of State John Kerry ripped America's current political leaders on Sunday, describing them as “so-called leaders” who are “operating in a fact-less world.”

Kerry, appearing on CBS’s “Face the Nation,” said today's political climate contrasts with leadership seen under the late Sen. John McCain John Sidney McCainCindy McCain endorses Biden: He's only candidate 'who stands up for our values' Biden says Cindy McCain will endorse him Biden's six best bets in 2016 Trump states MORE (R-Ariz.) who died last week after being diagnosed with brain cancer.

"You work to implement our democracy by reaching out across the aisle, by building relationships, by believing in the better angels of American value system. And I think John McCain did that. I did that, others have done that,” Kerry said.

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“But right now we have a culture divide that has been accentuated by political so-called leaders,” he continued. “And what they're doing is they're operating in a fact-less world.”

Kerry, who was the Democratic presidential nominee in 2004, has been a frequent critic of 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 and his administration.

Kerry recently has criticized Trump over his controversial summit in Helsinki with Russian President Vladimir Putin, his comments slamming NATO allies and his decision to revoke former CIA Director John Brennan’s security clearance.

Trump, in turn, has taken shots at Kerry.

In May, the president lashed out at Kerry on Twitter following reports that the former secretary of State met Iranian Foreign Minister Mohammad Javad Zarif in an attempt to save the Iran nuclear deal.

“The United States does not need John Kerry John Forbes KerryThe Memo: Warning signs flash for Trump on debates Divided country, divided church TV ads favored Biden 2-1 in past month MORE’s possibly illegal Shadow Diplomacy on the very badly negotiated Iran Deal,” the president wrote on Twitter. “He was the one that created this MESS in the first place!”

When pressed Sunday about the tweet, Kerry responded, “America and our democracy are more thoughtful than dishonest tweets.”