French President Emmanuel Macron says in a new interview with a leading German newspaper that the U.S. withdrawing from the Iran nuclear agreement could lead to war with the country.

The French leader tells Der Spiegel that President Trump Donald John TrumpOmar fires back at Trump over rally remarks: 'This is my country' Pelosi: Trump hurrying to fill SCOTUS seat so he can repeal ObamaCare Trump mocks Biden appearance, mask use ahead of first debate MORE's threats to abandon the Obama-era deal aimed at curbing Iran's nuclear weapons program could open "Pandora's box," leading the U.S. and European allies toward armed conflict.

"That would mean opening Pandora's box, it could mean war," Macron said. "I don't believe that Donald Trump wants war."

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Macron made a strong push for the U.S. to remain in the deal during his visit last month to the White House, but told reporters afterward that he thought Trump would decide to exit the deal.

“My view — I don’t know what your president will decide — is that he will get rid of this deal on his own, for domestic reasons,” Macron said.

Such a move "can work in the short term but it’s very insane in the medium to long term,” he added.

Iranian leaders have already pledged to abandon the deal if the U.S. withdraws, dismissing the possibility of continuing with the agreement solely with America's European allies.

If the Trump administration were to pull out, "it means that there is no deal left," Iranian Ambassador to the United Kingdom Hamid Baeidinejad told CNN on Wednesday.

Despite this, Secretary of State Mike Pompeo Michael (Mike) Richard PompeoOvernight Defense: Pentagon redirects pandemic funding to defense contractors | US planning for full Afghanistan withdrawal by May | Anti-Trump GOP group puts ads in military papers Overnight Defense: House Democrats unveil stopgap spending measure to GOP opposition | Bill includes .6B for new subs | Trump issues Iran sanctions after world shrugs at US action at UN Navalny calls on Russia to return clothes he was wearing when he fell ill MORE said this week that the U.S. will "likely" exit the deal "absent overcoming the shortcomings, the flaws."