In his opening monologue Tuesday night, Sean Hannity slammed Joe Scarborough for penning an op-ed titled "Trump is harming the dream of America more than any foreign adversary ever could."

Scarborough was roundly criticized for the piece, which was published just before the world commemorated the 17th anniversary of the 9/11 terror attacks.

The "Morning Joe" host somewhat tried to walk back his apparent Trump-9/11 comparison, tweeting that he should have shown more care in his tweet's wording and the column's conclusion.

"Joe Scarborough thinks Trump is worse than 9/11, where we lost nearly 3,000 people," Hannity said.

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He said Scarborough's piece is "particularly unhinged," and it appears that he has forgotten just how devastating 9/11 was.

Hannity acknowledged that pundits can sometimes misspeak or word something poorly on live television, but this was a thought-out, written piece for a major newspaper.

He noted that Scarborough's co-host and fiance, Mika Brzezinski, quickly came to his defense after the column caused a backlash.

"Joe and Mika, a perfect example of what happens when 'Trump derangement syndrome' gets way out of control," Hannity said. "At this point, I don't think these two can ever recover. It's that sick."

Watch Hannity's monologue above and see Eric Trump react below.

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