Sen. John McCain’s (R-Ariz.) former presidential campaign manager, Steve Schmidt, said early Thursday that President Trump was “clearly slurring his words” during an announcement that the U.S. will recognize Jerusalem as the Israeli capital, adding that “the impairment is chilling.”

“I don’t know the cause of it, but when you combine it with [Sen.] Bob Corker’s critique that the president of the United States is unstable, that he’s dangerous, when you look at the private comments that are made by members of Congress around his stability, you look at his actions in recent weeks,” said Schmidt, who is also an MSNBC contributor, on MSNBC’s “Morning Joe.”

“The question of his fitness, of his stability, is in the air,” Schmidt later added. “And it doesn’t get better when you see clear impairments.”

Trump on Wednesday announced the U.S. will recognize Jerusalem as its capital and will move the U.S. Embassy there from Tel Aviv, keeping a campaign promise made in 2016.