Speaking at the Saudi-backed Future Investment Initiative summit in Miami, Trump said, “We’re negotiating now but they have to open it up,” referring to the vital maritime route that has been largely disrupted during the war.

The Strait of Hormuz, through which roughly one-fifth of global oil supply typically passes, has seen sharply reduced traffic since the conflict began, contributing to rising energy prices and global market uncertainty.

Trump said Iran was “on the run” and repeated claims that its military and nuclear capabilities had been significantly weakened, despite Tehran’s denials.U.S. Secretary of State Marco Rubio earlier warned that Iran could seek to impose a “tolling system” on vessels transiting the strait, raising concerns over long-term disruptions to global shipping.

Trump praised Mohammed bin Salman and other Gulf leaders from the United Arab Emirates, Qatar and Bahrain for what he described as efforts to promote regional stability.Calling the Saudi crown prince a “close friend,” Trump said Riyadh had played a constructive role in ongoing diplomatic outreach.

The U.S. president also questioned Washington’s commitment to NATO, suggesting the United States might reconsider its obligations if European allies continued to withhold support in the Iran conflict.

“We would have always been there for them but now I guess we don’t have to be,” Trump said, framing the issue as one of burden-sharing within the alliance.

The conflict, now entering its fourth week, has disrupted shipping through the Hormuz corridor, with only limited vessel movement reported amid heightened security risks and ongoing military activity in the region.

German Chancellor Friedrich Merz told lawmakers in Berlin that while Iran must not threaten regional stability, Washington had failed to present a credible plan or request European participation. “To this day, there is no convincing plan for how this operation could succeed,” he said, adding that the United States had neither coordinated with allies nor outlined the necessity of their involvement.

His defense minister, Boris Pistorius, struck a similarly firm tone earlier in the week, stating, “This is not our war, we have not started it,” underscoring Berlin’s reluctance to be drawn into a widening confrontation linked to U.S. and Israeli actions.

French President Emmanuel Macron echoed Germany’s position, saying Paris was not a party to the conflict, reflecting broader unease among European capitals about both the rationale and execution of the U.S. initiative.

The near closure of the Strait of Hormuz, a critical artery for global energy shipments, has heightened economic concerns, placing pressure on governments to respond to rising risks to trade and supply chains. However, European leaders have signaled that any response must be coordinated, measured, and grounded in clear strategic objectives.

Merz, who has long advocated strong transatlantic ties, adopted notably direct language, highlighting a shift in tone among U.S. allies faced with what they perceive as unilateral decision-making in Washington.

Despite differing national interests, European leaders have sought to maintain a unified front, prioritizing diplomatic coherence while managing relations with an unpredictable U.S. administration.

Officials across the region have emphasized the importance of avoiding escalation, even as they acknowledge the broader security implications of instability in the Gulf. Their stance suggests a recalibration of transatlantic dynamics, with greater emphasis on consultation and multilateral engagement.

The divergence comes at a time when global markets remain sensitive to disruptions in energy flows, and policymakers weigh the risks of deeper military entanglement against economic and security considerations.