“People had gotten really numb to him blurting out something he shouldn’t have,” one former national security staffer told the Post.

…”Phone calls that were embarrassing, huge mistakes he made, months and months of work that were upended by one impulsive tweet.”

…One official said every one of Trump’s interactions with other leaders had a time limit before it would eventually devolve into an inappropriate interaction. 

“You had two to three minutes max,” one former senior administration official said. “And then he was still usually going to say whatever he wanted to say.”

Trump staffers were left ‘genuinely horrified’ by calls with leaders – Business Insider

hmmm