The White House punched back at both Presidents Bush on Saturday over their criticism of fellow Republican President Donald Trump as a destructive force in the party.

“If one presidential candidate can disassemble a political party, it speaks volumes about how strong a legacy its past two presidents really had,” a White House official told CNN. “And that begins with the Iraq war, one of the greatest foreign policy mistakes in American history.”

The Bushes let loose on Trump in a new book on their careers and presidencies, “The Last Republicans,” said media reports.

“He’s a blowhard,” said President George H.W. Bush, who was president from 1989 to 1993.

His son George W. Bush thinks that Trump’s ego and lack of humility could tear the GOP apart.

“I’m worried that I will be the last Republican president,” said the younger Bush, who was president from 2001 to 2009.

Neither man voted for Trump last year.

George W. Bush left the top of his 2016 ballot blank, while George H. W. Bush voted for Hillary Clinton, the book reveals.