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European Oil Markets
4JUN

EU rejects Trump's Hormuz toll venture

2 min read
10:20UTC

Brussels cited UNCLOS transit rights to dismiss a US-Iran joint venture on strait fees.

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Key takeaway

Europe sees Hormuz tolls as a threat to the entire maritime order, not a single waterway dispute.

The European Union rejected Donald Trump's suggestion of a US-Iran "joint venture" on Hormuz toll collection. Under UNCLOS (United Nations Convention on the Law of the Sea), which applies as customary international law to non-signatories including both Iran and the United States, ships enjoy transit passage that "shall not be impeded" and fees may only be charged for specific services rendered, not by reason of passage alone.

No post-1945 precedent exists for a coastal state imposing mandatory tolls on a natural international strait. Just Security assessed Iran's blanket selective toll as a "clear violation" of international norms. Iran's Islamabad proposal included a fee structure tied to vessel passage, as detailed in the Hormuz traffic event above.

Trump had previously called the toll concept "a beautiful thing." That language sits uncomfortably alongside the US's historical role as guarantor of freedom of navigation. The EU's rejection is a legal rebuke, but it has no operational teeth: Russia and China co-vetoed the UNSC Hormuz reopening resolution 11-2 , blocking the only multilateral enforcement route for free navigation.

If tolls are formalised, the precedent extends far beyond Hormuz. Turkey could apply the same logic to the Bosphorus, Egypt could renegotiate Suez terms, Indonesia and Malaysia could toll the strait of Malacca. The EU's objection is not about Iran alone; it is about preventing the rewrite of a maritime order that underpins European trade.

Deep Analysis

In plain English

Trump suggested that the US and Iran could run a 'joint venture' together to collect fees from ships passing through the Strait of Hormuz. He called the idea 'a beautiful thing'. The EU immediately rejected it. Under international law, countries cannot charge ships simply for passing through international straits. Ships have a right to pass freely. Fees are only allowed for specific services, like a pilot to navigate a difficult channel. Iran charging a blanket toll for permission to pass is, in the view of almost every international law scholar, illegal. The EU's rejection matters because European ships are among those currently stranded or blocked. But the EU has no military means to enforce its legal position in the strait, so the rejection is a principled statement rather than an operational one.

Deep Analysis
Root Causes

The EU's UNCLOS position reflects a genuine institutional commitment to rules-based maritime order that European states depend on for trade flows through multiple global chokepoints.

Trump's willingness to entertain a toll joint venture reflects a transactional approach to international law: rules are useful when they serve US interests and renegotiable when they do not. The US's own freedom-of-navigation programme, which has operated since the 1970s, was built on exactly the principle the Hormuz toll would undermine.

What could happen next?
  • Precedent

    Trump's positive framing of a US-Iran Hormuz toll joint venture, if pursued, would be the first US endorsement of a coastal state transit fee on a natural international strait, directly undermining the freedom-of-navigation doctrine the US has defended militarily for 70 years.

  • Consequence

    The transatlantic split on the Hormuz toll question, US treating it as potentially 'beautiful', EU rejecting it as UNCLOS-incompatible, reduces the coherence of any Western negotiating position and gives Iran leverage to play the two sides against each other.

Sources:Just Security
Mentions:Turkey →Bosphorus →Malaysia →Iran →Suez Crisis →Islamabad →Indonesia →Prima →Egypt →Russia →Strait of Hormuz →United Nations →China →United States →Strait of Hormuz Toll System →European Union →UN Convention on the Law of the Sea →Donald Trump →
First Reported In

Update #66 · Islamabad collapses: 10 days to expiry

Just Security· 12 Apr 2026
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Causes and effects
This Event
EU rejects Trump's Hormuz toll venture
The EU rejection exposes a transatlantic split: Trump entertained a toll concept that violates the maritime law framework Europe considers binding.
Led to
Paris drafts the Hormuz passage mission
The EU UNCLOS rejection of Trump's toll joint-venture (ID:2243) established the European legal ground the Paris conference is operationalising.
Occurred 17 Apr 2026
Read story →
Different Perspectives
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Kuwait
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Marine underwriters (Gulf war-risk)
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