DECODING: Iran Seizes the Strait of Hormuz — 30 Days of Exclusive Control That Paralyze the World

Introduction: The Planet's Maritime Lock Under Iranian Colors

The declaration that changed everything

On June 28, 2026, while strikes were still being exchanged between American forces and the Islamic Revolutionary Guard Corps (IRGC), Iranian Foreign Minister Abbas Araqchi pronounced the words that oil markets and admiralties around the world had dreaded since the conflict began: the responsibility for returning maritime traffic in the Strait of Hormuz to pre-war levels belongs "exclusively to Tehran." He demanded that other nations not "interfere in Iran's administration of the strait." For 30 days, and prior to full resumption of transit, the IRGC controls passage through the world's most strategic waterway.

This declaration did not come from nowhere. It is the result of a week of direct confrontations triggered by an Iranian drone strike on a Panama-flagged oil tanker on Saturday June 27, then on a cargo vessel the previous Thursday, with the sole purpose of forcing ships to use the northern route through Iranian waters rather than the maritime corridor running along Omani territory. The International Maritime Organization (IMO), facing an unprecedented situation, suspended its plan to evacuate vessels stranded in the strait. More than one-fifth of global crude oil and liquefied natural gas supplies normally transit through this 39-kilometre bottleneck.

The Chronology of Strikes and Provocations: June 26–29

A calibrated escalation

The sequence is precise. On Thursday, June 26, 2026, a cargo vessel is struck in the strait. On Friday, June 27, the United States and Israel conclude a ceasefire agreement with Lebanon — an agreement Hezbollah describes as "humiliating." That same Saturday, June 27, the IRGC strikes the Panama-flagged tanker carrying approximately 2 million barrels with an explosive drone. The US Central Command retaliates within hours by striking Iranian surveillance, communications, air defence, drone storage, and mine-laying installations. On Sunday, June 28, the IRGC launches missiles and drones at the American Ali Al Salem base in Kuwait and the US 5th Naval Fleet in Bahrain.

The IRGC naval command issues an unambiguous statement: "American bases in the region will know hell in the coming days." Adding, to captains still hesitating over which route to take: "Our fire on violators will remind the rest of the vessels of the clearly defined transit route." This is not rhetoric. It is a navigation order disguised as a military communiqué. On June 29, Iran confirms that no meeting with the United States will take place in Qatar "at any level" in the coming days, despite Donald Trump's announcement.

The mechanics of explosive drones as a maritime coercion tool

The IRGC's tactic is surgical in its intent. By striking a Panama-flagged tanker and a container ship, the IRGC is not trying to destroy global navigation: it is redirecting it. Each strike is a message addressed to shipowners worldwide — taking the Omani corridor means risking being hit; passing through Iranian waters under IRGC surveillance means having a guaranteed passage. This is blackmail at the scale of an international commercial route. CIMSEC (Center for International Maritime Security) analysis reveals that tanker traffic through the strait dropped from 151 ships per day before the conflict to 4–5 ships per day at the height of the crisis — a fall of 97%.

Iran and Oman held on June 28 their first meeting of the Hormuz Joint Committee to discuss future management of the strait. The Omani Foreign Minister was careful to clarify that Oman is "committed to not imposing transit fees" in the strait. The difference in tone with Tehran is striking: while Oman seeks to reassure markets, Iran is already raising the possibility of charging for passage for the 60 days following the signature of a potential agreement.

Russia, the Silent Beneficiary of Maritime Chaos

How the closure of Hormuz rehabilitated Russian oil

The CIMSEC analysis, published on June 25, 2026 by Rustam Taghizade, is perhaps the most unsettling reading of the entire crisis. It demonstrates that the effective closure of the Strait of Hormuz — and the global logistical disorder that followed — constituted a strategic windfall for Moscow. The reasoning is as follows: on March 5, 2026, the Trump administration granted India a 30-day waiver to purchase Russian oil, ostensibly to stabilise global energy markets after the Hormuz closure. This decision rendered American sanctions against Russia operationally inoperable: the physical priority of energy access overrode the architecture of economic pressure.

The figures are revealing. Before the crisis, Russia held approximately 36% of India's crude oil imports, a share that had been brought down to 31% under ten months of American pressure. After the March 5 waiver, India ordered approximately 60 million barrels of Russian oil for April delivery — more than double the February volumes. Russian oil, which had been sitting in tankers without buyers, found its preferred market again. Russia sold its cargoes at 5 to 15 dollars above the Brent price — a seller's market created directly by the Iranian crisis.

The paradox of sanctions in a world of chokepoints

The CIMSEC analysis draws a conclusion of rare clarity on the strategic implications of Iran's control of Hormuz: "The era of frictionless maritime sanctions is over." When a state controls an indispensable logistical node, the economic sanctions of outside powers become secondary to the physical reality of access. India, with strategic reserves covering barely one month of consumption, could not afford to refuse Russian oil in order to respect Washington's preferences. This is the blunt calculation that the IRGC deliberately exploits: create a global energy emergency that forces American allies to derogate from sanctions.

The American navy maintains two carrier strike groups in the region and had, as of March 26, sunk at least 60 Iranian warships and destroyed numerous fast attack boats. But American naval superiority was not enough to prevent traffic from falling 97%. The IRGC's asymmetric arsenal — cheap drones, naval mines, coastal missiles — proved sufficient to paralyse what battleships cannot protect: shipowners' confidence in the corridor's safety.

The Impact on Oil Markets: From Panic to Correction

Prices that defied the logic of the crisis

One of the most surprising aspects of this crisis is the relative resilience of oil prices. According to senior analyst Ipek Ozkardeskaya of Swissquote, "the impact on oil prices remains relatively contained" — an observation that would have seemed implausible had one been told, six months earlier, that traffic through the Strait of Hormuz would collapse by 97%. The reason is twofold: several key markets became "surplus thanks to the drawdown of strategic reserves and tankers quietly making their way out of the Gulf." And the American waiver on Russian oil injected a significant compensatory volume into supply chains.

But this surface stability masks deep vulnerabilities. India — where 85 to 90% of crude oil and liquefied petroleum gas imports normally transit through Hormuz — exposed the asymmetry of its energy dependence with documentary brutality. Economists calculate a risk of wholesale inflation rising by 0.3 to 0.7 percentage points and estimated export losses of between 2 and 4% if the disruption continues. For an economy the size of India's, these figures are not theoretical.

The map of 170 million offshore Iranian barrels

CIMSEC analysis reveals another little-covered figure: at the time of the crisis, approximately 170 million barrels of Iranian oil were floating aboard tankers offshore, without buyers. Iran paradoxically became both the creator of the oil chaos and one of the few suppliers capable of remedying it — for buyers willing to play by its rules. Reliance Industries, the Indian giant, bought 5 million barrels at 7 dollars above the Brent price. This is a scarcity market organised by the very one who holds the valve: a mechanics of codified economic blackmail.

This dual role — disruptor and alternative supplier — is at the heart of Tehran's strategy. It is not merely trying to survive sanctions: it is seeking to make itself indispensable despite them. And in a situation where India, China, and emerging Asian economies are structurally exposed to the Gulf, this indispensability carries real political value.

The Doha Talks and the Memorandum of Understanding: A Peace Under Strain

The June 17 memorandum and its unapplied clauses

At the heart of the diplomatic crisis lies the memorandum of understanding signed on June 17, 2026 between Iran and the United States, after a round of Switzerland-mediated talks led by Vice President JD Vance and Iranian Parliament Speaker Mohammad Baqer Qalibaf. This 14-point text provided for a cessation of hostilities and the reopening of the strait while negotiations continued on Iran's nuclear programme. Washington had even lifted sanctions against Tehran following these talks.

The memorandum's first article stipulated that "military operations must immediately and permanently cease on all fronts, including in Lebanon." Yet on Friday, June 27, Israel struck Hezbollah militants in Lebanon — an action the IRGC immediately interpreted as a violation of the memorandum by the American side. Iranian Foreign Ministry spokesman Esmaeil Baqaei announced on June 29 that "no negotiation meeting with the American side will take place at any level in the coming days." The text also states that the strait must be "free of transit fees for 60 days only" after the agreement's signature — a clause suggesting that charging for passage is a formalised option from the moment of drafting.

Doha, Qatar, and the geography of mediations

Qatar, which hosts both American military bases and maintains relations with Tehran, is at the centre of the mediation mechanics. President Trump announced on June 28 that Iran had requested a meeting in Doha the following day — a claim Tehran immediately denied. Qatar asked shipowners and vessel operators to suspend all navigation and maritime activity until further notice on June 28. This is an extraordinarily grave measure: Qatar is the world's leading exporter of liquefied natural gas, and even a temporary suspension of its maritime traffic has cascading effects on European and Asian energy markets.

Iranian Deputy Foreign Minister Kazem Gharibabadi stated that the situation in the Strait of Hormuz was "sensitive and complex." He affirmed that Iran will carry out demining of the strait alone and will not accept the participation of any other country in this process. France, represented by President Emmanuel Macron, had said on June 28 that it had reached an agreement with Oman to collaborate on demining — an initiative immediately rejected by Tehran as a "provocation."

The Strait of Hormuz as an Instrument of Iranian Power Projection

A militarised grey-zone doctrine

What the IRGC has been practising in the Strait of Hormuz since June 26, 2026 fits within an established military doctrine: grey-zone warfare, halfway between peace and open war. Drone strikes on commercial vessels do not formally constitute an act of war against the countries whose flag they fly. They create a zone of uncertainty that is, in itself, the strategic objective. Shipowners no longer know whether the next strike will target their vessel. Insurers raise premiums. Commercial routes are reorganised. All without a formal declaration of war, without UN Security Council action, without a clear institutional response mechanism.

The Iranian presence at Qeshm Island — where authorities inspect vessels wishing to use the passage — concretely illustrates this doctrine. Controls cover ownership, insurance, and the crew's links to the United States or Israel. Ships linked to India, China, or Pakistan pass through — Iran does not consider them "aggressor" countries. Others wait, or navigate at their own risk. The dividing line is not legal or commercial: it is geopolitical. The IRGC decides who has the right to navigate.

The transit fee option: a dangerous precedent

The Iranian declaration about the possibility of "charging for passage" through the strait after a potential agreement takes effect has consequences that extend well beyond the current crisis. The Strait of Hormuz is an international navigation route governed by the United Nations Convention on the Law of the Sea (UNCLOS), which guarantees the right of transit passage to all commercial and military vessels. No riparian state — neither Iran nor Oman — has the right to levy taxes on this passage under international law. By claiming this option, Tehran is explicitly testing the international community's willingness to defend these norms.

Oman responded clearly: its Foreign Minister stated that his country is "committed to not imposing transit duties" and that "this responsibility lies entirely with Iran to ensure that the strait and approved shipping lanes are free of mine-related dangers." This is a diplomatic ultimatum, framed with Oman's characteristic restraint. But it draws a line: if Iran institutes a transit fee, Muscat will not endorse it.

The International Community Facing Impotence: UN, NATO, Regional Allies

The IMO without room to manoeuvre

The International Maritime Organization, the UN specialised agency based in London, suspended its plan to evacuate vessels stranded in the strait. This decision reflects a concrete reality: in a context of active strikes and the IRGC's claim of exclusive control, no coordinated evacuation plan can be implemented without Tehran's implicit or explicit agreement. The IMO finds itself in the position of a regulator whose operational territory has been militarised. It can document, it can warn — it cannot navigate on behalf of shipowners.

NATO, several of whose members have direct maritime interests in the region and some of whose warships patrol the Persian Gulf or Arabian Sea, has not adopted a collective position on the exclusive control claimed by Iran. This is a significant institutional gap in a context where freedom of navigation is normally one of the Atlantic Alliance's red lines. The fact that the United States is directly engaged in strikes against Iran complicates any collective response mechanism — an alliance engaged in proxy war cannot simultaneously conduct a multilateral freedom of navigation operation.

The UAE, Bahrain, and the Gulf map

The United Arab Emirates lifted their travel ban to Lebanon for their nationals on June 29 — the first sign of partial normalisation in the region. Flights between Tehran and Dubai resumed the same day, for the first time since the conflict began, according to Iranian state television. These signals of détente coexist with the Hormuz crisis without contradicting each other: in the Gulf, riparian states maintain their commercial pragmatism while remaining exposed to the fallout from a confrontation in which they do not directly participate.

Bahrain, seat of the US 5th Fleet, is on the front line: the IRGC targeted its installations on June 28. Its government has made no public statement on conditions of transit in the strait. This silence speaks volumes about the dilemma of the fragile balance between American allegiance and Iranian neighbourliness that these small Gulf states must perpetually manage.

The Iranian Nuclear Programme: The Invisible Issue Behind Hormuz

Hormuz as a nuclear negotiation lever

The Hormuz crisis cannot be read independently of the issue that triggered the conflict as early as February 28, 2026: Iran's nuclear programme. The American and Israeli strikes of that day directly targeted installations linked to uranium enrichment. The memorandum of understanding of June 17 included nuclear negotiations as one of the dossiers to address within the framework of the talks. The closure of Hormuz, in this logic, is not an end in itself: it is a negotiating currency that Tehran is using to maximise its position in discussions over its nuclear programme.

Abbas Araqchi said it implicitly in every declaration on the strait: Iran will not lift its exclusive control until it has obtained guarantees. These guarantees necessarily concern the halt of military strikes, the freezing of sanctions, and recognition of an Iranian right to civilian uranium enrichment. The Strait of Hormuz is the entry price for these negotiations. And the entire world, whether it wants to be or not, pays the cost of this escalation. Iran has demonstrated that it can paralyse a fifth of global energy supplies with cheap drones. That is the definition of a first-order asymmetric negotiating lever.

Conclusion: Hormuz, the Test of Power in a World Without Guaranteed Rules

What the next 30 days will reveal

The 30 days of exclusive management claimed by Iran from June 28, 2026 are a test period of considerable importance. If the international community tacitly accepts this claim — through inaction, economic calculation, diplomatic exhaustion — Iran will have obtained a precedent: one in which a state can unilaterally appropriate the management of an international waterway, with drones and missiles as its only legitimacy. If, conversely, a coordinated multilateral response takes shape — diplomatic guarantees, collective naval presence, formal designation of maritime law violations — the precedent will be reversed.

For now, the Strait of Hormuz is a zone where the IRGC defines the navigation rules, where the UN is powerless, where global oil markets came close to a breakdown, and where Russia has banked billions in profit without firing a single shot. This is the world of 2026: one where physical chokepoints have more strategic value than UN resolutions, and where a determined asymmetric actor can challenge the world's greatest naval power — not by defeating it, but by making it insufficient to guarantee confidence.

By Maxime Marquette, columnist

Columnist's transparency note

Editorial stance and limits

This article relies exclusively on open sources published between June 25 and June 29, 2026. The columnist did not have access to confidential diplomatic sources or classified military briefings. Figures on oil traffic come from the CIMSEC analysis of June 25, 2026 (author Rustam Taghizade) and from Reuters. Diplomatic statements are drawn from Al Jazeera (June 28), CBS News (June 29), and Reuters (June 27).

The situation on the ground as of publication date may have evolved rapidly. The Doha talks, suspended as of June 29, may resume or fail definitively. Maritime traffic figures are estimates based on vessels with active transponders; actual traffic may differ. The analysis of Russian benefits is an analytical reading of economic data, not a confirmation of deliberate strategic intent on Moscow's part.

Conflicts of interest

The columnist has no financial interest in oil markets or in the companies mentioned. The editorial position is pro-freedom of international navigation and critical of IRGC actions that violate international maritime law.

Sources

Primary sources

Al Jazeera — IRGC doubles down as Iran-US MOU jeopardised by Hormuz strikes (Maziar Motamedi) — June 28, 2026

Reuters — US conducts further strikes on Iran — June 27, 2026

CIMSEC — The Hormuz Closure and the Limits of Sanctions: How Russia Benefited from Iran's Chokepoint Weapon (Rustam Taghizade) — June 25, 2026

Secondary sources

CBS News — Iran describes situation at Hormuz as "sensitive and complex" — June 29, 2026

USA Today — US strikes Iran, Strait of Hormuz — June 26, 2026

Foreign Policy — Geopolitical analysis of the Iran-US conflict in the Gulf — June 2026