Donald Trump Donald John TrumpBiden leads Trump by 36 points nationally among Latinos: poll Trump dismisses climate change role in fires, says Newsom needs to manage forest better Jimmy Kimmel hits Trump for rallies while hosting Emmy Awards MORE on Monday escalated his feud with MSNBC’s “Morning Joe” by attacking co-host Mika Brzezinski’s intelligence.

Tried watching low-rated @Morning_Joe this morning, unwatchable! @morningmika is off the wall, a neurotic and not very bright mess! — Donald J. Trump (@realDonaldTrump) August 22, 2016

Trump implied a romantic relationship between Brzezinski and fellow co-host Joe Scarborough in tweets marking the latest shots fired in the GOP White House nominee's war on the media.

Some day, when things calm down, I'll tell the real story of @JoeNBC and his very insecure long-time girlfriend, @morningmika. Two clowns! — Donald J. Trump (@realDonaldTrump) August 22, 2016

The comments came the same morning Scarborough and Brzezinski mocked a recent speech from Trump in Fredericksburg, Va., which they found rambling.

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"He belted like, honestly ... like he's had a lot to drink," Brzezinski said.

Scarborough responded to Trump's attacks on Twitter, advising him to focus on the general election:

@HillaryClinton is targeting key swing states today while Trump starts his day obsessed with cable news hosts while channeling Gawker. SAD! — Joe Scarborough (@JoeNBC) August 22, 2016

Neurotic and not very bright?

Look in the mirror. https://t.co/FPaqGW9JWv — Joe Scarborough (@JoeNBC) August 22, 2016

Thanks for watching.

Morning Joe is enjoying it's best ratings ever thanks to obsessed fans like you. GLAD https://t.co/FPaqGW9JWv — Joe Scarborough (@JoeNBC) August 22, 2016

Trump has repeatedly criticized “Morning Joe” for its coverage of his presidential campaign. Earlier this month, he called Scarborough “sad and irrelevant,” citing the show's “low ratings” as evidence.

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And Scarborough earlier this month urged Republicans to remove Trump as their party’s presidential nominee.

“A bloody line has been crossed that cannot be ignored,” he wrote in an Aug. 9 op-ed for The Washington Post.

“At long last, Donald Trump has left the Republican Party few options but to act decisively and get this political train wreck off the tracks before something terrible happens.”

Trump's Monday tweets could feed into criticism that he is disrespectful toward women. Last year, the real estate mogul jousted with Fox News anchor Megyn Kelly, including remarks that many found sexist.