The U.S.-led war in Iran will dominate President Donald Trump’s G7 summit in Évian, France, as the conflict reshapes global energy markets, fractures transatlantic alliances, and forces European leaders to confront a U.S. president whose unpredictability could upend diplomacy.
Trump arrives in France this week for the three-day summit, where Iran’s war will overshadow the original agenda of economic growth, AI regulation, and supply chain resilience—topics now overshadowed by surging energy costs and a geopolitical crisis exposing deep divisions among the world’s leading democracies. The White House has confirmed Trump will meet individually with French President Emmanuel Macron, other G7 leaders, and Middle Eastern allies, while also engaging with Ukrainian President Volodymyr Zelenskyy. Yet the real test will be whether Trump’s volatility—documented by analysts as a “legendary” trait—derails the summit entirely, as he has done before, or whether Macron’s carefully crafted agenda can keep him engaged for the full three days.
Why Iran Will Dominate the Évian Summit—and What’s at Stake
Iran is not just another item on the G7 agenda—it is the crisis that will define the summit. The U.S.-led military campaign in Iran, launched last year, has triggered a cascade of economic and security fallout that no other issue can match. Energy prices have surged, global supply chains are under strain, and the war’s spillover into the Strait of Hormuz threatens to disrupt shipping lanes critical to the world economy. According to The Guardian, Macron has framed the Évian discussions to address these risks head-on, but the real question is whether Trump—who has a history of abruptly leaving summits—will stay the course.
Trump’s decision to withdraw 5,000 U.S. troops from Germany earlier this year, only to redirect them to Poland, sent a clear message to European allies: his priorities are fluid, and his patience for diplomatic niceties is limited. The move was widely seen as a response to European reluctance to fully back the U.S. war effort in Iran, and it underscored the growing friction between Washington and Brussels. NPR reports that senior U.S. officials described the troop relocation as a “lesson” for European leaders, who now face a president whose temper is as unpredictable as his policy shifts.
The economic toll of the war is already being felt globally. The World Bank slashed its 2026 growth forecast from 2.9% to 2.5%—the lowest since the Covid pandemic—citing soaring commodity prices and inflation pressures. Europe’s central banks are raising interest rates for the first time in three years, while container shipping rates have doubled since the war began. The poorest nations, already struggling with food and fertilizer shortages, will bear the brunt of these disruptions, according to the French foreign ministry. Yet Trump remains in a state of denial about the economic damage, telling Fox News last week that oil prices had not risen as much as predicted—adding, with characteristic bravado, “I love the inflation.”
The Trump Factor: Will the Summit Collapse Before It Begins?
Trump’s attendance at the Évian summit is already a gamble. He stormed out of the 2025 G7 in Kananaskis, Canada, after just one day, citing urgent matters back in Washington—though many diplomats suspected his impatience with the proceedings was the real reason. This time, Macron has taken extraordinary steps to keep him engaged, including postponing the summit’s start to accommodate Trump’s 80th birthday celebration on the White House lawn. The French president has even dangled a private dinner at Versailles as a carrot if Trump stays the full three days.
But the risks remain high. Trump has a history of publicly humiliating his hosts—last year, he called Macron “publicity seeking” and accused him of “getting it wrong” on multiple occasions. Analysts warn that his volatility could derail the summit at any moment. Constanze Stelzenmüller, a transatlantic security expert at the Brookings Institution, told NPR that any meeting with Trump carries “the prospect of significant uncertainty.” His mood can shift in an instant, she said, from charming to explosive, leaving diplomats scrambling to keep up.
“The president’s volatility is legendary,” Stelzenmüller said. “He could get upset very quickly. He can be charming at other times. And he can whiplash between one or the other in the blink of an eye.”
This unpredictability is not lost on European leaders, who are bracing for another round of public sparring. Trump has already accused his G7 counterparts of lacking the “loyalty” to join his push to reopen the Strait of Hormuz by force—a plan that has been met with resistance from Germany, France, and the UK. The Franco-British naval taskforce, designed to enforce freedom of navigation in the strait, is now under pressure to move quickly, but de-mining efforts remain a critical bottleneck. Hundreds of tankers are backed up in the strait, threatening to choke off global energy supplies. If Trump perceives the G7 as moving too slowly, he may lash out—potentially scuttling the entire summit.
Europe’s Growing Independence—and Why It Matters
Despite the tensions, Trump’s confrontational approach may have an unintended consequence: it is pushing Europe toward greater strategic autonomy. Repeated U.S. pressure on trade, defense spending, and security policy has forced European governments to coordinate more closely, reducing their reliance on Washington. Nathalie Tocci, a former top EU foreign policy adviser now at Johns Hopkins SAIS Europe, told NPR that Europe is now in a “much better place” than it was a year ago. “I would say there is less bending of the knee,” she said, “and there’s more willingness to politely be firm on certain issues.”
This shift is evident in Germany, where Chancellor Friedrich Merz has publicly described the U.S.-led war in Iran as a “humiliation.” European leaders are now more willing to challenge Trump’s demands, whether on military action or economic policy. The question is whether this newfound cohesion will hold—or if Trump’s next outburst will force Europe back into a reactive posture.
Brett Bruen, a former National Security Council official under President Obama, warned that Iran will be the defining issue at Évian. “There is no doubt Iran is going to dominate the agenda,” he told NPR. “It is going to be both a military and security challenge. It’s a major economic challenge, but it’s also a political challenge.” The stakes could not be higher: if the U.S. cannot contain the fallout from a military operation against a “middling power” like Iran, how will it ever push back against a nuclear-armed adversary like China?
The Economic Fallout: Who Loses Most?
The war’s economic damage is already being felt across the globe. The World Bank’s latest report predicts commodity prices will rise by 22% this year—nearly triple the 7% decline expected at the start of 2026. Food and fertilizer shortages are pushing inflation toward 3% in Europe, while the Bank of Japan is preparing to raise interest rates to a 31-year high. The French central bank’s governor, Emmanuel Moulin, has warned of “persistent” inflation ahead, a sign that the worst may be yet to come.
Yet Trump’s administration appears to be in denial. In a recent interview with Fox News, he dismissed concerns about oil prices, declaring, “You know what I really love? I love the inflation.” His comments reflect a broader disconnect between Washington and its allies, who are grappling with the real-world consequences of the war. The U.S. withdrawal of troops from Germany—followed by their redeployment to Poland—was seen as a signal that Trump is prioritizing short-term political gains over long-term stability. European leaders, now more united than ever, are watching closely to see if this summit will mark a turning point—or another chapter in a relationship that is fraying at the seams.
What Happens Next? Three Scenarios for Évian
- Trump stays engaged: If Macron’s incentives—including the Versailles dinner—keep Trump at the table, the summit could produce a fragile consensus on managing the Iran crisis. But any agreement would likely be overshadowed by Trump’s next provocation, whether on trade or military action.
- Trump storms out early: If tensions flare, Trump could abandon the summit again, leaving Macron to clean up the diplomatic mess. European leaders would be forced to accelerate their strategic autonomy plans, but the war’s economic damage would continue unchecked.
- A breakthrough on Iran: The most optimistic scenario would see the U.S. and Europe agree on a de-escalation plan for the Strait of Hormuz, easing shipping bottlenecks. But given Trump’s history, this would require a level of cooperation that has not been seen in years.
The real test of the Évian summit will not be what is said in the meeting rooms, but what happens afterward. If Trump’s volatility prevails, the war in Iran will continue to destabilize global markets—and the fractures in the West will only deepen. If Macron can keep Trump engaged, even for a short time, it may buy the world a few more months of relative stability. But one thing is certain: the Iran crisis is far from over, and its ripple effects will be felt for years to come.
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