US expected to start naval blockade of Iranian ports after deadline passes

The Guardian - World News ConflictNews ReportEN 5 min read 100% complete by Julian Borger Senior international correspondentApril 13, 2026 at 07:59 PM

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How a US blockade on Iran has sanctioned ships turning around

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The US was expected to begin a naval blockade of Iranian ports on Monday, impacting ships entering or leaving Iranian coastal areas in the Gulf. This action follows a six-week conflict between the US-Israeli coalition and Iran, initiated by a US-Israeli attack on February 28th. While US Central Command made no formal announcement, the blockade was scheduled to begin at 5:30 PM Iranian time. President Trump claimed 34 ships passed through the Strait of Hormuz on Sunday, and that Iran was seeking a deal, claims that lack evidence. Iran warned of retaliatory measures and potential consequences for Americans, while Trump threatened to eliminate any Iranian attack boats approaching US vessels. The blockade's enforcement east of the Strait of Hormuz remains unclear, raising concerns about potential environmental disasters or vessel seizures.

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Key Claims (5)

AI-Extracted

Trump said any Iranian attack boats approaching the US flotilla would be “immediately eliminated”.

quote — Donald Trump100% confidence

Donald Trump claimed that 34 ships had passed through the strait of Hormuz on Sunday.

factual — Donald Trump100% confidence

US blockade of ships using Iranian ports was due to take effect on Monday evening.

factual — Article90% confidence

US naval blockade would cost Iran approximately $276m a day in lost exports.

statistic — Miad Maleki80% confidence

The tactic is aimed at strangling the heavily oil-dependent Iranian economy.

factual — Article70% confidence

Claims are automatically extracted and should be independently verified. Attribution indicates the stated source of the claim.

Key Entities & Roles

Key Player Opposition Context

United Kingdom 30% Israel 40% Gulf of Oman 40% Tehran ×250% Gulf ×260% Strait of Hormuz ×260% US Central Command (Centcom) ×270% Donald Trump ×680% Iran ×680% United States ×1090%

Keywords

naval blockade 100% iranian ports 90% us-iran conflict 80% strait of hormuz 70% economic endurance 60% oil tanker 50% us central command 50% maritime trade 40%