A MSNBC host on Sunday "half-joked" about Donald Trump's "mental acuity" after the president made a post about Russia on social media.

Trump over the weekend complained about news coverage of his summit with Putin. Taking to Truth Social, the president attacked the media over reports that he could not get Putin to agree to a ceasefire in Ukraine.

"It's incredible how the Fake News violently distorts the TRUTH when it comes to me," the president wrote. "There is NOTHING I can say or do that would lead them to write or report honestly about me. I had a great meeting in Alaska on Biden's stupid War, a war that should have never happened!!!"

"If I got Russia to give up Moscow as part of the Deal, the Fake News, and their PARTNER, the Radical Left Democrats, would say I made a terrible mistake and a very bad deal," he then added. "That's why they are the FAKE NEWS! Also, they should talk about the 6 WARS, etc., I JUST STOPPED!!! MAGA"

On MSNBC, host Jonathan Capehart read Trump's reply on air.

"Well, speaking of Donald Trump's reaction, he's on his social media platform today. Here's what he what he put out today. 'If I got Russia to give up Moscow as part of the deal, the fake news and their partner, all caps, the radical left Democrats would say, I made a terrible mistake and a very bad deal. That's why they are the, all caps, fake news, exclamation point. Also, they should talk about the six wars, all caps, et cetera, all caps. I just stopped, three exclamation points, MAGA,'" Capehart said. "What is that? What is he talking about? I am concerned about his mental acuity."

Capehart adds that he's "half joking," and another guest goes on to call the Trump comment "gaslighting."

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