Arnold Schwarzenegger said despite President Donald Trump's decision to walk away from an international accord to curb global warming, the United States is "still in" the agreement.

The actor and former California governor told delegates gathered for United Nations climate talks in Poland on Monday that "America is more than just Washington or one leader."

Calling Trump "meshugge" – Yiddish for "crazy" – for deciding to withdraw from the landmark climate accord, Schwarzenegger insisted the 2015 agreement has widespread support at the local and state levels in the U.S.

He said local leaders should be invited to next year's annual conference and emphasized the point in trademark fashion by saying: "And if you do that, I promise you: I'll be back."

The "Terminator" actor has been a harsh critic of Trump, often getting into public disputes with the president on social media.

In early 2017, Trump said Schwarzenegger, who was then the host of "The Apprentice," has been a "total disaster" since the Austrian-born star took over the series. Trump said during the National Prayer Breakfast at the time that we should pray for a rise in ratings to which Schwarzenegger fired back, suggesting he and Trump should switch jobs “so people can finally sleep comfortably again.

Trump later tweeted that Schwarzenegger “did a really bad job as governor of California” and “is even worse” as the host of “The Apprentice.”

Shortly after their heated exchange, the 71-year-old told Men's Journal he wanted to "smash [Trump's] face into the table."

“I said, ‘Let’s sit on it for an hour,” Schwarzenegger told the magazine. “I called my assistant and said, ‘I think what we really should do is request a meeting a go back to New York. And then we just smash his face into the table.’”

“And then I think, ‘We can’t do that, either. I think I have to be above all of that and put him on the spot,’” he added.

The Associated Press contributed to this report.