After Dick Cheney announced his endorsement of Kamala Harris for president, President Donald Trump wasted no time firing back. In a post on TRUTH Social, Trump labeled Cheney as an “irrelevant RINO” and blamed him for the U.S. involvement in prolonged, costly wars. Trump also took a swipe at Cheney’s daughter, Liz Cheney, mocking her defeat in one of the most significant losses in Congressional election history.

Cheney’s support for Harris came with a message about putting country over party. “We each have a duty to defend our Constitution,” Cheney said, explaining that his decision was rooted in his belief that the current political climate calls for putting national interests first.

Trump, meanwhile, emphasized his identity as the “Peace President,” contrasting his non-interventionist foreign policy with Cheney’s reputation for advocating military action. “Only I will stop World War III!” Trump declared, underscoring his focus on keeping the U.S. out of foreign wars, a key point of his campaign.

The clash between Trump and Cheney highlights the ongoing tension within the Republican Party, as figures like Cheney break ranks with the direction of the GOP under Trump. Cheney’s endorsement of Harris is seen by many as a rare instance of bipartisanship, but it has also drawn fierce criticism from Trump’s supporters.