Republican strategist Tara Setmayer clashed with former President Trump Donald John TrumpUS reimposes UN sanctions on Iran amid increasing tensions Jeff Flake: Republicans 'should hold the same position' on SCOTUS vacancy as 2016 Trump supporters chant 'Fill that seat' at North Carolina rally MORE advisor Jason Miller in a heated debate on CNN over the president's response to the Russia probe.

The two butted heads on "Anderson Cooper 360" late Monday while discussing Trump's response to new indictments by 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 in the ongoing investigation into Russian election meddling. The new development in the Russia probe followed the deadly school shooting at a high school in Parkland, Fla., that left 17 dead and 14 others injured.

Setmayer ripped Trump for his tweets and comments about both the shooting and the indictments, saying it "highlights how unqualified he is" to be president.

“This, again, just highlights how unqualified he is as president of the United States. He does not have the temperament. You have to be able to take the hits if you’re going to be president of the United States, and he is unable to do it," Setmayer said.

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"So instead he behaves like an insecure lunatic on Twitter as opposed to being a mature adult as the president of the fricking United States. I’m sick of you guys making excuses for him," she continued.

Miller had been defending Trump's tweets over the weekend regarding the Russia investigation, saying he was being "attacked around the clock" and that he spent time with shooting victims in Florida.

“Children were killed!” Setmayer shot back at Miller's defense of Trump.

“It’s okay if the president is attacked and he can’t push back at all?” Miller responded. “So he has to just take an attack?”

“He is the most thin-skinned person,” Setmayer responded. “He doesn’t need to defend himself all the time constantly, especially after a major national tragedy where kids died miles from his resort where he’s living in luxury.”

The CNN debate took place after Trump traveled to South Florida on Friday to meet with the families and friends of victims of the shooting. But he also issued a slew of tweets on Saturday and Sunday reacting to the special counsel's new indictments in the Russia probe.

If it was the GOAL of Russia to create discord, disruption and chaos within the U.S. then, with all of the Committee Hearings, Investigations and Party hatred, they have succeeded beyond their wildest dreams. They are laughing their asses off in Moscow. Get smart America! — Donald J. Trump (@realDonaldTrump) February 18, 2018

He also suggested the FBI failed to address red flags regarding the alleged shooter, Nikolas Cruz, because they were too busy with the Russia probe.