On April 23, 2026, President Donald Trump declared that the United States has “control” of the Strait of Hormuz and ordered the U.S. Navy to attack any vessel laying mines in the critical waterway, escalating tensions with Iran amid ongoing seizures of commercial ships and renewed fears of a broader Gulf conflict that could disrupt global oil supplies.
This assertion of unilateral control over one of the world’s most vital maritime chokepoints — through which approximately 20% of global oil trade passes — marks a significant departure from decades of U.S. Policy emphasizing freedom of navigation and multilateral cooperation. The move comes as Iran has seized two container ships in recent weeks, heightening fears of a tit-for-tat cycle that could draw in regional powers and global energy markets. With the Strait facilitating roughly 17 million barrels of oil per day, any disruption risks triggering price shocks that would reverberate from Asian refining hubs to European manufacturing centers.
The Legal Mirage of “Control” in International Waters
Trump’s claim of U.S. “control” over the Strait of Hormuz contradicts the foundational principles of the United Nations Convention on the Law of the Sea (UNCLOS), to which both the United States and Iran are signatories — though the U.S. Has not ratified it, it observes its provisions as customary international law. Under UNCLOS, the Strait operates under a regime of transit passage, allowing all ships and aircraft the right of unimpeded navigation. No single nation can claim sovereignty or control over the waterway, which is bordered by Iran and Oman and connects the Persian Gulf to the Gulf of Oman and the Arabian Sea.
Legal experts warn that framing naval engagement as a response to mine-laying — without clear evidence of Iranian state involvement — risks legitimizing preemptive strikes based on ambiguous threats. “The president’s language blurs the line between deterrence and escalation,” said Suzanne Maloney, senior fellow at the Brookings Institution. “While the U.S. Has a right to self-defense, declaring unilateral control and authorizing attacks on unidentified vessels undermines the very international order it claims to uphold.”
“No nation owns the Strait of Hormuz. To assert control is not only legally untenable but dangerously provocative in a region where miscalculation could ignite a wider war.”
— Anthony H. Cordesman, Arleigh A. Burke Chair in Strategy, Center for Strategic and International Studies
Global Oil Markets Brake for Impact
The Strait of Hormuz remains the single most critical point in global energy infrastructure. According to the U.S. Energy Information Administration (EIA), in 2024, approximately 17.2 million barrels per day (bpd) of crude and refined petroleum products transited the Strait — accounting for about 30% of global seaborne oil trade. Major consumers include China, India, Japan, South Korea, and European nations, all of whom rely on steady flows from Saudi Arabia, Iraq, the UAE, and Kuwait.
Even the threat of disruption triggers market volatility. During the 2019 tanker attacks in the Gulf of Oman, Brent crude prices spiked by over 4% in a single session. Analysts at the International Energy Agency (IEA) estimate that a full closure of the Strait for just 10 days could push global oil prices above $120 per barrel, increasing transportation and manufacturing costs worldwide and exacerbating inflationary pressures already straining post-pandemic recoveries.
To contextualize the stakes, consider the following comparison of daily oil transit volumes through key global chokepoints:
| Chokepoint | Daily Oil Transit (Million Barrels) | % of Global Seaborne Trade | Primary Users |
|---|---|---|---|
| Strait of Hormuz | 17.2 | 30% | China, India, Japan, South Korea, Europe |
| Strait of Malacca | 15.8 | 27% | China, Japan, South Korea, India |
| Suez Canal | 4.5 | 8% | Europe, Asia, North America |
| Bab el-Mandeb | 4.8 | 8% | Europe, Asia |
Source: U.S. Energy Information Administration, 2024 data
Regional Ripple Effects and Alliance Strains
The U.S. Posture risks alienating traditional Gulf allies who favor diplomatic de-escalation. Saudi Arabia and the UAE, while wary of Iranian influence, have consistently advocated for restraint to protect their own oil exports and shipping interests. Oman, which shares maritime boundaries with Iran and facilitates quiet diplomacy, has positioned itself as a mediator — a role that could be undermined if U.S. Actions are perceived as coercive rather than protective.
Meanwhile, China and Russia have increased their naval presence in the Gulf under the guise of anti-piracy missions, using the instability to expand their strategic footprint. Beijing, the world’s largest oil importer, has a vested interest in keeping the Strait open but may welcome U.S. Overreach as an opportunity to position itself as a guarantor of global trade stability — a narrative it has actively promoted through its Global Security Initiative.
European nations, particularly Germany and France, have expressed concern that the U.S. Shift toward unilateral military directives complicates NATO cohesion and undermines collective security mechanisms. As one EU diplomat told the European External Action Service on condition of anonymity, “We are watching a superpower rewrite the rules of engagement in real time — and no one has been consulted.”
The Minefield of Miscalculation
Pentagon officials have privately acknowledged that clearing mines from the Strait — should they be laid — could take six months or more, as reported by The Washington Post. Naval mines are inexpensive to deploy but extraordinarily difficult and dangerous to remove, requiring specialized ships, drones, and divers operating under constant threat. Historical precedent shows that mine warfare in the Gulf is not hypothetical: during the 1980s Tanker War, Iran and Iraq laid hundreds of mines, prompting the U.S. To launch Operation Earnest Will and Operation Prime Chance to reflag and escort Kuwaiti tankers.
Today, the U.S. Fifth Fleet, based in Bahrain, maintains a persistent presence in the region, but its rules of engagement have traditionally emphasized de-escalation and proportional response. Trump’s order to “attack any boat laying mines” removes critical ambiguity — and with it, the safeguards against mistaken identity. In 2016, the USS Mason erroneously identified commercial vessels as threats and launched defensive missiles. in a tense environment, such errors could now trigger lethal retaliation.
As Cordesman noted in a recent CSIS briefing, “The real danger isn’t Iran laying mines — it’s the U.S. Firing first and asking questions later.”
For global markets, supply chains, and international law, the Strait of Hormuz remains a linchpin. What happens in those 21 miles of water doesn’t just affect tanker routes — it tests whether the 21st-century order will be governed by rules or by the loudest voice on the bridge.
How should the world respond when a superpower claims dominion over a global commons? And what happens when the guardrails come off?
