Pelosi On Trump's Yovanovitch Attack: He Knows He's In Over His Head

House Speaker Nancy Pelosi (D-Calif.) attributed President Donald Trump’s frequent insulting attacks on rivals and those who disagree with him to “his own insecurity as an imposter” because “he knows full well that he’s in that office way over his head.”

In a preview clip of CBS’ “Face The Nation” to be aired Sunday, Pelosi said Trump had “made a mistake” with his Twitter attacks on former U.S. Ambassador to Ukraine Marie Yovanovitch during her impeachment inquiry testimony on Friday. Trump knows Yovanovitch’s strength and was “trying to undermine it,” she added.

House Intelligence Committee Chairman Adam Schiff (D-Calif.) described Trump’s tweet, below, as “witness intimidation in real time by the president of the United States.”

“Of course, presidents appoint ambassadors, but people don’t insult people, especially when they’re giving testimony before the Congress of the United States,” Pelosi continued in the interview.

“I think even his most ardent supporters have to honestly admit this is the wrong thing for the president to do,” she said.

Pelosi also stressed the significance and weight of a president’s words. Trump “should not frivolously throw out insults, but that’s what he does. ... I think he knows full well that he’s in that office way over his head. And so he has to diminish everyone else.” 

Check out the preview here:

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This article originally appeared on HuffPost.