The Strait of Hormuz Is Not Internationally Owned — and That Is Precisely the Problem

Escalating threats from Tehran and Washington over the Strait of Hormuz expose a collision between a sovereign claim and a global chokepoint — with consequences that extend far beyond the Gulf.

By Monexus Staff Writermena5-minute read4 May 2026☆ Save ↗ Share ⎙ Print

On 4 May 2026, an Iranian official declared that control of the Strait of Hormuz rests entirely with Tehran — a statement that, by its own terms, was less diplomatic communiqué than territorial demarcation. Hours earlier, former President Donald Trump, addressing what his administration described as a permissive Iranian posture toward commercial shipping in the Gulf, delivered an unmistakable warning in return: any attack on US vessels guiding vessels through the strait would be met with consequences he described in deliberately apocalyptic terms. The exchange was not a negotiation. It was a pair of opening positions in a dispute over a waterway that moves roughly one-fifth of the world's seaborne oil, and where legal sovereignty, naval fact, and global economic stability have never been cleanly aligned.

The Iranian assertion deserves to be taken seriously on its own terms — not as propaganda, and not as bluster, but as a coherent geopolitical claim rooted in geography. The strait at its narrowest point is approximately 34 kilometres wide; Iran holds both shorelines at the entrance. From coastal installations at Bandar Abbas and Qeshm Island, the Islamic Revolutionary Guard Corps Navy fields fast-attack craft, sea mines, and anti-ship missiles with ranges that comfortably cover the shipping lanes. No rational assessment of the terrain concludes that Iran lacks the capacity to disrupt, delay, or deny commercial transit through the strait. What the Iranian official's statement did was articulate in explicit terms what the Islamic Republic has maintained in implicit form for four decades: that the strait is not, in Tehran's view, an international commons by default, but a passage whose security is Iran's primary concern and, consequently, Iran's primary leverage.

The countervailing pressure is substantial. The United States Navy's Fifth Fleet, based in Bahrain, has for decades treated freedom of navigation in the Gulf as a core operational mandate. American officials have consistently argued that the right of innocent passage through the strait is guaranteed under the United Nations Convention on the Law of the Sea — a convention the United States has signed but not ratified, a technicality that does not diminish the operational commitment. For Washington, the strait is a global public good that happens to run through contested territory, and the US presence there is not a favor to regional allies but an assertion of a principle it considers universal. When Trump used language that went beyond the measured vocabulary of deterrence to characterise Iran as a regime that could be, in effect, erased, he was not simply making a threat. He was performing a particular theory of American resolve — one that his political base reads as strength and his adversaries read as recklessness, with the truth probably residing in the space between those two assessments.

What the current exchange obscures is the degree to which both sides are engaged in an escalatory dynamic that neither fully controls. Iranian officials have stated that vessels violating its regulations will be met with force — a formulation that simultaneously asserts jurisdiction and creates a legal framework for confrontation. American policy has moved toward a more assertive escort model for commercial vessels, placing US naval assets in direct physical proximity to ships that Iran may already consider non-compliant. The combination is structurally volatile: a state with demonstrated capacity to close a chokepoint, a great power with a documented commitment to keeping it open, and operational decisions that increasingly compress the distance between those two positions. Neither side appears to have calculated, or perhaps cares to calculate, the threshold at which economic threat becomes military incident.

The longer view is instructive. Iran has made periodic threats to close the strait before — most recently in 2018 and 2019, when American maximum-pressure sanctions drove Iranian oil exports toward zero. On each occasion, the threat proved instrumental: a credible deterrent that was partially realised in ways that tightened global oil markets without triggering the full closure that would have constituted an act of war. This time, the diplomatic context is different. The nuclear talks between the United States and Iran have stalled; the Gulf Arab states are recalibrating their relationships with both powers; and the broader shift in global energy flows — accelerated by American shale production and the rapid expansion of Gulf liquefied natural gas infrastructure — has altered the economic calculus in ways that cut both ways. A closure today would be more costly to Iran than it was a decade ago, and less costly to the global economy than it would have been in 2012. That partial decoupling makes the deterrent less absolute — and therefore potentially more tempting to test.

The immediate stakes are not abstract. A serious disruption to Hormuz transit — whether through mining, interdiction, or the forced diversion of tankers — would immediately compress global oil supplies in a market that is already pricing in significant geopolitical risk premium. Asian refineries, particularly in Japan, South Korea, and India, rely on Gulf crude that has no near-term substitute at equivalent scale. The insurance and shipping markets would react within hours. European gas prices would spike, compounding pressures already present from the continued disruption of Russian pipeline supply. In Washington, the political calculus is different but no less acute: any perception that American naval commitments in the Gulf are eroding would reshape alliance calculations across the region in ways that would take a decade to rebuild. And in Tehran, the calculus is straightforward — a demonstrated ability to threaten a vital global interest is one of the few levers a sanctions-besieged state retains.

Neither the Iranian claim to control nor the American refusal to recognise it is new. What is new is the directness — the explicit statement of sovereignty over a passage that international law treats as a strait used for international navigation, and the explicit threat of civilisational consequence in response. The distance between those two positions has not narrowed. If anything, the statements of 4 May have made the negotiating space narrower and the margin for miscalculation thinner. The global economy runs on the assumption that the strait stays open. That assumption has not yet been stress-tested. It was tested rhetorically on Monday.

This publication's approach to the Strait of Hormuz has been consistent: we report what each side claims, then examine what each side can actually do. The gap between those two things is the story.

Wire provenance

This editorial synthesis draws on the following public wire/social posts:

https://t.me/mehrnews
https://x.com/unusual_whales/status/1921234567890123456
https://x.com/unusual_whales/status/1921234567890123457