President Donald Trump is scrambling to assemble a multinational coalition to reopen the world’s most critical oil chokepoint, but from London to Tokyo, allied capitals are refusing to send warships, raising urgent questions about whether the U.S. can manage the economic fallout of a war it started largely on its own terms.

The Core Story: A Superpower Asks for Help

On Sunday, March 15, President Trump told reporters aboard Air Force One that he has demanded “about seven” countries send warships to help secure the Strait of Hormuz, the narrow waterway between Iran and Oman through which roughly one-fifth of the world’s traded oil normally flows. Iran has effectively shuttered the strait since the U.S.-Israeli strikes began on February 28, firing on vessels that attempt to pass and damaging at least one cargo ship, the Thai-flagged Mayuree Naree, leaving three crew members missing.

“I’m demanding that these countries come in and protect their own territory, because it is their territory,” Trump said. “It’s the place from which they get their energy. And they should come, and they should help us protect it.”

In an interview with the Financial Times, Trump went further, warning that NATO faces a “very bad” future if member nations do not respond to Washington’s call. He named China, France, Japan, South Korea, and the United Kingdom as countries he expects to participate.

The response, as reported by Al Jazeera, The Guardian, CNBC, and the Associated Press, has been a near-unanimous refusal.

Context & Global Impact: The Ripple Effect

The diplomatic standoff over the Strait of Hormuz is not merely a military logistics problem. It is reshaping alliances, energy markets, and the global economic order in real time.

• Europe is drawing a firm line. Germany said the situation requires “greater clarity.” The Netherlands called a short-term mission “very difficult.” UK Prime Minister Keir Starmer stated plainly: “Let me be clear: that won’t be, and it’s never been envisioned to be, a NATO mission.” He added Britain would “not be drawn into the wider war,” though London discussed deploying mine-hunting drones already in the region.
• Asia is staying out. Japan’s Prime Minister Sanae Takaichi told parliament that Tokyo does not currently plan to dispatch naval vessels. Australia echoed the same position. Both countries are major oil importers but appear unwilling to risk entanglement in a conflict they had no role in launching.
• China is the wildcard. Trump claimed China gets about 90% of its oil from the strait, though analysts at Kpler say the actual div for direct seaborne crude from the Middle East is closer to 57%. Beijing’s embassy in Washington was noncommittal, and Chinese officials have called for “de-escalation and diplomatic negotiations” rather than military coalitions.
• Oil prices remain near $100–$105 per barrel. The effective closure of the strait represents the largest oil supply disruption in the history of the modern energy era as a share of global consumption, according to market analysts at Advisorpedia.

The Trump-Xi Summit Hangs in the Balance

In the most consequential diplomatic signal of the week, Trump told the Financial Times he “may delay” his planned summit with Chinese President Xi Jinping, originally scheduled for March 31 to April 2 in Beijing. Trump said the U.S. wants to know whether China will help reopen the strait before the trip.

“We’d like to know before that,” Trump said, calling the two-week window “a long time.”

Treasury Secretary Scott Bessent offered a different framing on Monday, telling reporters that any delay would be logistical: “The president wants to remain in D.C. to coordinate the war, and traveling abroad at a time like this may not be optimal,” rather than punitive toward Beijing.

China, for its part, confirmed Monday that talks on the summit are continuing. But the uncertainty underscores how deeply the Iran strikes have reshaped the global diplomatic landscape in just two weeks. The cancellation or significant delay of the summit could further strain U.S.-China trade relations, which remain fragile after the Supreme Court recently struck down some of Trump’s broader tariff authority.

Why Allies Are Hesitant

The allied reluctance is rooted in a fundamental political calculation, as reported by the Associated Press and Fortune. Trump “relied on his gut and largely side-stepped diplomatic coordination” when launching strikes against Iran with Israel. European and Asian allies were not consulted in advance. Now, with economic and geopolitical consequences spiraling, those same allies are being asked to bear the costs of a campaign they did not choose.

Estonia’s Foreign Minister Margus Tsahkna captured the mood: “What will be the plan?” he asked, calling for clarity on Trump’s “strategic goals” before any commitments could be discussed.

What’s Next: A Coalition by Week’s End?

Axios reported on Sunday that Trump is working to announce a coalition later this week, though no country has publicly committed warships. The Pentagon has estimated the Iran war could last up to six weeks, according to a Trump aide cited by Bloomberg.

If the Strait of Hormuz remains closed, the economic consequences will only compound. Every week of disruption deepens the global energy shock, pushes inflation higher in import-dependent economies, and tests the political durability of the “go it alone” strategy that defined the war’s opening chapter.

Frequently Asked Questions

Why is the Strait of Hormuz so important? Approximately 20% of the world’s traded oil passes through this narrow waterway between Iran and Oman. Its closure directly raises global energy prices and disrupts supply chains worldwide.

Which countries has Trump asked for help? Trump has named China, France, Japan, South Korea, and the United Kingdom, among others. He says approximately seven countries have been contacted, but declined to name all of them.

Could this affect the Trump-Xi summit? Yes. Trump has said he may delay his planned March 31 visit to Beijing if China does not signal willingness to help with the strait. China says summit talks are ongoing, but the outcome remains uncertain.