WORLD powers involved in the Iran nuclear agreement expressed regret at President Donald Trump’s decision to pull the U.S. out of the landmark pact amid concern the move will undermine efforts to stop the spread of atomic weapons.

Signatories to the 2015 deal to curb the Islamic republic’s nuclear ambitions urged Trump not to fundamentally undermine the U.N. Security Council-endorsed agreement so that the other parties — Britain, France, Germany, Russia, China and Iran — can continue to respect it.

“Together, we emphasize our continuing commitment to the deal. This agreement remains important for our shared security,” French President Emmanuel Macron, German Chancellor Angela Merkel and British Prime Minister Theresa May said in a joint statement Tuesday after discussing the move.

The three called on Washington to “ensure that the structures of the agreement can remain intact, and to avoid taking action, which obstructs its full implementation by all other parties to the deal.”

China regretted the U.S. decision to leave the Iran deal, Foreign Ministry spokesperson Geng Shuang said yesterday. Geng said that all parties should seriously implement it and maintain the integrity and seriousness of the deal.

But Israeli Prime Minister Benjamin Netanyahu praised the U.S. president’s decision as “a historic move.”

In New York, Russia’s deputy ambassador to the United Nations, Dmitry Polyansky, said “we are disappointed” at the U.S. announcement.

U.N. Secretary-General Antonio Guterres called the nuclear deal “a major achievement” that “has contributed to regional and international peace and security” and said he was “deeply concerned” by the U.S. decision. He called on the other signatories “to abide fully” by their commitments.

European Union foreign policy chief Federica Mogherini, who helps supervise the way Iran and the six world powers implement the deal and settle any disputes, expressed concern about Trump’s suggestion that new sanctions might be slapped on Iran.

“I am particularly worried by the announcement tonight of new sanctions,” Mogherini told reporters in Rome, adding that she would consult with Europe’s partners about any new measures “to assess their implications.”

“In any case, the European Union is determined to act in accordance with its security interests and to protect its economic investments,” she added.

In a message directed to Iran itself, Mogherini said: “Do not let anyone dismantle this agreement. It is one of the biggest achievements diplomacy has ever delivered, and we have built this together.” (SD-Agencies)