Just before his speech honoring military veterans at a ceremony commemorating the 75th anniversary of D-Day in Normandy, France, President Trump gave an interview marked by insults directed toward the speaker of the House and former special counsel Robert Mueller.

Speaking to Fox News’ Laura Ingraham, Trump called the former special counsel a “fool” and House Speaker Nancy Pelosi a “disaster.”

“Let me tell you, he made such a fool out of himself,” Trump said of Mueller, speaking at a cemetery where more than 9,300 American soldiers who died in World War II are buried.

Mueller is a decorated Marine veteran of the Vietnam War, in which President Trump did not serve, and which he described in an interview on British television as a “terrible war” and “very far away.”

The president took issue with Mueller’s public statement on his investigation into Russian election interference. Although Mueller declined to charge Trump with obstruction, he explicitly refused to exonerate the president.

President Trump speaks to Fox News' Laura Ingraham before delivering his commemorative D-Day address in Normandy, France, on Thursday. (Screengrab via Fox News)

“If we had had confidence that the president had clearly not committed a crime, we would have said so,” Mueller said. “Charging the president with a crime is not an option we could consider.”

Mueller’s statement immediately ramped up pressure on congressional Democrats to launch impeachment proceedings. Pelosi, who so far has resisted calls from some members of her party for Trump’s impeachment, did not rule it out.

Trump said Pelosi ignored a subsequent statement from Mueller and the Department of Justice, saying the office “concluded it would not reach a determination — one way or the other — about whether the President committed a crime.”

“Nancy Pelosi, I call her ‘Nervous Nancy,’ Nancy Pelosi doesn’t talk about it,” the president said. “Nancy Pelosi is a disaster, OK? She’s a disaster. And let her do what she wants. You know what? I think they’re in big trouble.”

Pelosi, who was also in Normandy for the D-Day commemoration, declined to respond.

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Pelosi declining to criticize Trump while at Normandy today: “I don’t talk about the president while I’m out of the country. That’s my principle.” pic.twitter.com/tPcaHnwK9m — Jim Acosta (@Acosta) June 6, 2019

“I don’t talk about the president while I’m out of the country,” she told CNN’s Jim Acosta. “That’s my principle.”

In a closed-door meeting with House Democratic leaders on Tuesday, House Judiciary Committee Chairman Jerry Nadler reportedly pressed Pelosi on launching impeachment proceedings against Trump.

According to Politico, Pelosi stood firm, saying, “I don’t want to see him impeached, I want to see him in prison.”

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