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European Oil Markets
23JUL

Iran: only allied ships may pass Hormuz

2 min read
19:27UTC
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EconomicDeveloping

Iran's UN representative Ali Mousavi told the International Maritime Organisation this week that vessels belonging to or linked to 'aggressor parties' forfeit the right of innocent passage through the strait of Hormuz. 1 PressTV, Iran's official state broadcaster, confirmed the statement as Iran's official legal position. Permitted countries under the vetting system are India, China, Russia, Iraq, and Pakistan.

The IMO statement is the formal legal scaffolding for the parliamentary toll bill being drafted simultaneously. Iran is constructing a two-layer legal architecture: domestic statute (the Majlis bill) combined with formal international notification (the IMO submission) that pre-empts claims that Iran is acting without legal notice. The IMO notification mirrors Egypt's communication to the Suez Canal Users Association in 1956 after nationalisation.

Trump had claimed Iran offered Hormuz concessions , and Pakistan confirmed the 15-point US proposal . The IMO statement directly contradicts the framing that Iran is moving toward reopening the strait: Iran is doing the opposite, establishing formal legal grounds for continued selective passage that would survive any ceasefire under the pending domestic legislation. Pentagon planning for a Kharg Island assault continues ; the IMO statement is Iran's legal counter-move to that planning, establishing that any forcible passage would constitute a violation of Iran's defined legal framework rather than merely a military confrontation.

Deep Analysis

In plain English

Iran told the international shipping authority that ships linked to countries attacking it lose the right to pass through the Strait of Hormuz freely. This would let Iran legally charge or block ships from the US, Israel, and their allies. International law says countries cannot block international waterways, but Iran argues it is defending itself.

Deep Analysis
Root Causes

Iran is exploiting a gap in UNCLOS: the convention assumes coastal states will not be at war with the states whose vessels transit their waters. The legal framework was not designed for a scenario where a coastal state is under active military attack.

By framing the toll as a defensive measure rather than an offensive blockade, Iran creates legal ambiguity that is harder to challenge than a straightforward closure.

Sources:Times of Israel / CENTCOM·Times of Israel / CENTCOM
Mentions:Kharg Island →
First Reported In

Update #49 · Hormuz toll into law; Tangsiri killed

Times of Israel / CENTCOM· 27 Mar 2026
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Causes and effects
Caused by
Pentagon plans to seize Kharg Island
Legal notification to IMO constructs formal basis for resisting forcible passage by US forces
Occurred 24 Mar 2026
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Trump claims Hormuz prize; Iran silent
IMO statement directly contradicts Trump's claim that Iran is offering Hormuz concessions
Occurred 24 Mar 2026
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This Event
Iran: only allied ships may pass Hormuz
Led to
Iran's five peace terms: Hormuz first
Iran's IMO notification revoking innocent passage for hostile parties is the international legal layer underpinning the five conditions, with Hormuz sovereignty as condition five.
Occurred 25 Mar 2026
Read story →
One ship through Hormuz in 24 hours
Iran's IMO legal notification on Hormuz sovereignty builds the international-law layer of the dual-architecture strategy reinforcing the de facto closure.
Occurred 29 Mar 2026
Read story →
Different Perspectives
US money managers (CFTC-tracked)
US money managers (CFTC-tracked)
US money managers had trimmed WTI net long positioning into July's rally, doubting the Hormuz premium would hold without freight or war-risk confirmation, and the crude stock build reported for the week to 17 July gives that scepticism a fundamentals basis. The 25 July CFTC data will show whether Brent's move above $100 changed their calculus.
Asian distillate buyers (Singapore)
Asian distillate buyers (Singapore)
Singapore's distillate holders kept retaining middle-distillate barrels as the East-West arbitrage window narrowed further this week, a pattern that sharpened as Fujairah light distillates hit a record low. Cargoes are being held rather than released west into the tightening Mediterranean market.
Bulgaria
Bulgaria
Bulgaria secured the removal of Lukoil founder Vagit Alekperov and Patriarch Kirill from the 21st package, with President Rumen Radev calling a personal listing 'shooting ourselves in the foot'. Sofia is protecting its position in Lukoil's EUR 3bn compensation claim over the 2023 Neftohim Burgas nationalisation.
Russia
Russia
Russia loses the roughly $14 a barrel of legal headroom the price-cap formula would have released toward $58, even as Urals continues trading below Moscow's $59 budget floor. The shadow-fleet insurance workaround that lets sanctioned crude clear above $44 in practice remains untouched by the freeze itself.
European Union
European Union
The EU adopted its 21st sanctions package on 23 July, freezing the $44 Russia oil cap for 12 months rather than letting the formula drift it toward $58, and listed shadow-fleet support vessels for the first time. The package cleared only after three failed Coreper votes.
Marine war-risk underwriters (Lloyd's-linked syndicates)
Marine war-risk underwriters (Lloyd's-linked syndicates)
War-risk syndicates lifted southern Red Sea hull premiums 150% to about 0.75% of hull value after the 20 July blockade declaration, still a seventh of the roughly 5% Hormuz band. Underwriters reset on realised loss, not declared threat, so the 23 July Encelia and Layla strikes set up the next re-mark.