WASHINGTON — President Donald Trump faces a European double bill this week as a crucial deadline looms on whether he will withdraw from the Iran nuclear deal.

French President Emmanuel Macron and German Chancellor Angela Merkel, arriving back to back, will bring a unified message: Save the deal.

“I don’t have any Plan B for nuclear (protections) against Iran,” Macron said Sunday on Fox News. “Let’s preserve the framework because it is better than a sort of North Korea-type situation.”

Iran’s foreign minister made the point more dramatically, warning that if Trump quits the 2015 accord, Tehran may respond by relaunching and intensifying its now-blocked nuclear program.

Iranian Foreign Minister Mohammad Javed Zarif, who helped negotiate the nuclear deal, said on CBS’ “Face the Nation” that Iran might consider “resuming at a much greater speed” its nuclear activities.

“Obviously the rest of the world cannot ask us to unilaterally and one-sidedly implement a deal that has already been broken,” Zarif said.

“I think the international community has seen that … the United States under this administration has not been in a mood to fulfill its obligations,” he said. “So that makes the United States not very trustworthy.”

The dual nuclear dilemmas — Iran and North Korea — are coming to a head in a dramatically short span of time.

Trump has vowed to scrap the 2015 Iran accord unless co-signatories France, Germany and Britain can “fix” it. Unless revisions are made, he has vowed not to sign another wavier of U.S. sanctions on May 12, the next deadline, potentially wrecking the deal.

Trump also is hoping to meet with North Korean leader Kim Jong Un by mid-June in a push to roll back the country’s growing nuclear arsenal.

U.S. and European diplomats have been brainstorming to find ways to address some of Trump’s concerns, including Iran’s production of ballistic missiles and its support for militant groups elsewhere in the Middle East — issues that were never tied to the nuclear deal.

But the diplomats still are not “across the finish line,” a senior administration official told reporters Friday.

Both Macron and Merkel will try to persuade Trump not to renege on the deal.

Macron, who arrives Monday for a three-day official state visit and Merkel, who comes Friday for a 24-hour working visit, have other concerns, including the tariffs that Trump has imposed on steel and aluminum imports.

Macron has the best chance of getting through to Trump. The president seemed enamored of the brash, self-confident French leader, admiring his Bastille Day military parade last summer, and dinner under the stars at the Eiffel Tower.

“We have a very special relationship because both of us are probably the maverick of the systems on both sides,” Macron said Sunday.

The warmth seems to be growing between the two leaders despite divergent political views on issues from the international role in Syria to climate change.

Macron “has broken the code when it comes to dealing with President Trump,” said Heather Conley, director of the Europe program at the Center for Strategic and International Studies, a nonpartisan Washington think tank.

“He has been, I think, the most successful in trying to convince the president to think through some very important issues … to France and to the European Union,” Conley added.

After the Iranian nuclear deal, trade will top Merkel’s agenda. She, Macron and other European leaders often express frustration that Trump, in his emphasis on bilateral trade agreements, displays a misunderstanding of how the European Union works.

Washington Bureau’s Noah Bierman contributed.

tracy.wilkinson@latimes.com