On March 18, President Donald Trump intensified pressure on U.S. allies to support efforts to reopen the Strait of Hormuz, warning that their hesitation could jeopardize long-standing alliances.
Trump criticized allied nations for what he perceives as a lack of burden-sharing, especially as tensions with Iran disrupt one of the world’s most vital oil transit routes.
Trump took to Truth Social to convey his frustration:
The post came as Trump amplified an editorial urging greater allied participation in securing the waterway, published March 17 by the New York Post editorial board.
Allied hesitation has become a central point of friction.
On March 17, Trump posted, “The United States has been informed by most of our NATO ‘Allies’ that they don’t want to get involved with our Military Operation.” He warned that such reluctance could have “very bad” consequences for the alliance’s future.
The standoff follows weeks of escalating conflict with Iran and disruptions to commercial shipping, with some insurers refusing coverage and vessel traffic slowing significantly, according to reporting published March 18 by Fox News.
Oil prices have reportedly hovered near or above $100 per barrel amid the uncertainty.
Trump has argued that countries more dependent on Middle Eastern energy — including European nations and China — should take a leading role in securing the strait. “I’m demanding that these countries come in and protect their own territory,” he said, adding that the U.S. relies on the route far less than others, according to CNBC.
Despite the pressure, several major allies have signaled reluctance to engage directly. Leaders from the United Kingdom have ruled out sending warships into Iranian waters, while French leaders have indicated that any role would be limited and conditional. German representatives have outright rejected involvement, emphasizing that NATO is a defensive alliance, according to Fox News. Representatives from smaller nations, including Estonia’s foreign minister, Margus Tsahkna, have expressed openness to discussions, but no country has publicly committed naval forces to the mission.
The dispute has fueled broader questions about alliance cohesion.
Trump has long argued that NATO operates as a “one-way street,” with the United States providing security guarantees while allies contribute less in return, a theme echoed in his recent statements and in the March 17 New York Post editorial he shared.
At the same time, analysts have noted that European governments were not consulted before the initial U.S. military actions against Iran, which may be contributing to their hesitation, according to CNBC.
Still, Trump has made clear he views the moment as a test of alliance credibility, warning that the U.S. will take note of which countries step forward.
“We will remember,” Trump said, according to CNBC.
