PARIS — French President Emmanuel Macron stressed to President Trump in a telephone call on Thursday the importance of abiding by a nuclear deal with Iran ahead of a decision by the U.S. president that could reinstate sanctions on the country.

“The president … recalled France’s determination in favor of a strict application of the agreement and the importance of its respect by all of its signatories,” the French president said in a statement. “The proper implementation of the agreement should be accompanied by a strengthened dialogue with Iran on its ballistic program and its regional policy, in order to guarantee better stability in the Middle East.”

President Trump, in the same phone conversation with Macron, underscored that Iran “must stop its destabilizing activity in the region,” the White House said.

Trump faces a Friday deadline on whether to waive sanctions on Iran or likely kill a nuclear agreement with Tehran by re-imposing sanctions. On Thursday, Macron and the leaders of Britain and Germany urged Trump to uphold the nuclear deal.