Former Secretary of State 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 fired back at Fox News host Greg Gutfeld on Sunday, quipping that he was glad to have fought in uniform to defend Gutfeld’s “freedom to be a complete fool on Twitter.”

“Happy Veterans Day, Greg. I’m glad that all of us who served in uniform fought to defend your freedom to be a complete fool on Twitter. #freedomisntfree,” he wrote.

Happy Veterans Day, Greg. I’m glad that all of us who served in uniform fought to defend your freedom to be a complete fool on Twitter. #freedomisntfree https://t.co/LFUrXDWt8E — John Kerry (@JohnKerry) November 11, 2018

The Twitter confrontation came after Kerry accused 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 of insulting the memories of thousands of war veterans by scraping a Saturday visit to a French World War I cemetery because of bad weather.

President @realDonaldTrump a no-show because of raindrops? Those veterans the president didn’t bother to honor fought in the rain, in the mud, in the snow - & many died in trenches for the cause of freedom. Rain didn’t stop them & it shouldn’t have stopped an American president. — John Kerry (@JohnKerry) November 11, 2018

Gutfeld then went after Kerry on Twitter Saturday night.

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“U didn't stop ISIS. you sent James Taylor,” Gutfeld wrote. “Plug your knothole, Captain Driftwood.”

Gutfeld appears to be referring to when Kerry was criticized for failing to send a top-level official to a Paris anti-terrorism rally in 2015.

He was subsequently mocked for bringing singer-songwriter James Taylor to perform his well-known version of the Carole King song “You’ve Got a Friend” in France.

Trump skipped the visit to the cemetery Saturday, which was attended instead by White House chief of staff John Kelly John Francis KellyMORE and Chairman of the Joint Chiefs of Staff Gen. Joseph Dunford.

He was criticized by social media users, including a variety of former White House staffers from previous presidencies.

"It's not even 60 miles from central Paris to the monument. If the weather is too wet & windy for helicopters, a presidential motorcade could drive the distance in an hour," tweeted The Atlantic's David Frum, a onetime speechwriter for former President George W. Bush.

“I helped plan all of President Obama’s trips for 8 years. There is always a rain option. Always," added Ben Rhodes, a foreign policy adviser to former President Obama.