Watch: Donald Trump Gives Fox News Interview By Graves of D-Day Soldiers Blasting Mueller, 'Nervous Nancy' Pelosi

With the graves of American D-Day soldiers behind him, President Donald Trump gave an exclusive interview to Fox News where he called special counsel Robert Mueller a "fool" and nicknamed House Speaker Nancy Pelosi "Nervous Nancy" and a "disaster."

Fox News' The Ingraham Angle host Laura Ingraham asked Trump on Thursday if he cares if Mueller testifies before Congress.

"Let me tell you, he made such a fool out of himself the last time," Trump said of Mueller, "Because what people don't report is the letter he had to do to straighten out his testimony because his testimony was wrong."

Trump continued: "But Nancy Pelosi—I call her Nervous Nancy—Nancy Pelosi doesn't talk about it. Nancy Pelosi's a disaster, OK, she's a disaster and let her do what she wants."

The president concluded, "You know what? I think they're in big trouble."

Asked in March whether he thought Mueller acted honorably while leading the Russia probe, Trump said, "Yes he did." But Trump grew critical of Mueller, who in a Justice Department press conference last week declined to clear the president of obstruction of justice.

Similarly, Trump after Democrats gained control of the House of Representatives in the midterm elections spoke highly of Pelosi, who has been less critical of Trump compared to progressives like Alexandria Ocasio-Cortez. But Trump has heightened attacks against Pelosi despite her continued stance against impeaching him. Trump nicknamed Pelosi "Nervous Nancy" seemingly for the first time on Thursday.

Pelosi, in a brief interview with CNN also with the American D-Day ceremony behind her, declined to hit back at Trump and said she preferred not to do so while she was outside the United States.

Trump's Fox News interview took place before a D-Day remembrance ceremony in Normandy, which started half an hour later than scheduled, with veterans waiting. But Trump reportedly finished his interview with Ingraham before French President Emmanuel Macron's late arrival.

President Trump early Thursday showed respect to D-Day veterans by tweeting, "Heading over to Normandy to celebrate some of the bravest that ever lived. We are eternally grateful! #DDay75thAnniversary #DDay75"

Trump also praised veterans by tweeting a graphic of D-Day with a quote from himself: "They did not know if they would survive the hour. They did not know if they would grow old. But they knew that America had to prevail. Their cause was this Nation, and generations yet unborn."

Trump D-Day Fox Mueller Pelosi
President Donald Trump and First Lady Melania Trump attend a French-US ceremony at the Normandy American Cemetery and Memorial in Colleville-sur-Mer, Normandy, northwestern France, on June 6, 2019, as part of D-Day commemorations marking the 75th anniversary of the World War II Allied landings in Normandy. AFP/Getty Images/DAMIEN MEYER