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Iran now defines Strait of Hormuz as far larger zone, IRGC officer says

Iran has expanded its declared control zone in the Strait of Hormuz to a 'vast operational area' stretching up to 300 miles, according to a senior IRGC Navy officer. The move follows a US naval blockade imposed in April and a short-lived US effort to assist shipping. The expansion could affect global oil and LNG transit through one of the world's most critical chokepoints.

By Tertius News AI Desk 2 outlets · 2 articles Version 1 Coverage May 12–13, 2026 Published Aug 14

Iran expands Strait of Hormuz control zone, IRGC says

Iran has significantly expanded its declared control zone in and around the Strait of Hormuz, according to a senior officer in the Islamic Revolutionary Guard Corps (IRGC) Navy. The announcement, reported on Tuesday by Iran's Fars and Tasnim news agencies, comes amid heightened tensions with the United States, which imposed a naval blockade on Iran in mid-April.

The strait, a narrow waterway between Iran and Oman, is a critical transit route for about one-fifth of the world's oil and liquefied natural gas supply, according to both reports. The new definition, as described by Deputy Political Director Mohammad Akbarzadeh, transforms the previously narrow passage into a "vast operational area" extending from the city of Jask in the east to Siri Island in the west. The width of the zone, previously estimated at 20 to 30 miles (32 to 48 kilometers), has now grown to between 200 and 300 miles (321 to 482 kilometers), according to the reports.

"In the past, the Strait of Hormuz was defined as a limited area around islands such as Hormuz and Hengam, but today this view has changed," Akbarzadeh said, as quoted by the state-affiliated agencies.

This is the second such expansion announced by Iran since the start of its conflict with the U.S. and Israel. On Monday, the IRGC Navy published a map showing a new zone of control extending along a significant stretch of the UAE's Gulf of Oman coastline, from Iran's Mount Mobarak and the UAE's Fujairah in the east to Qeshm Island and the UAE's Umm al Quwain in the west. Tuesday's announcement appears to represent a further widening of that area.

Key claims

The key claims in the reports include:

The Strait of Hormuz's declared width has grown from 20-30 miles to 200-300 miles.
The expanded zone is now described as a "vast operational area" and a "complete crescent" (the latter term appears in the reports).
The new zone extends from Jask and Sirik to areas beyond Qeshm and Greater Tunb islands, and includes parts of the UAE's Gulf of Oman coastline.
About a fifth of the world's oil and LNG passes through the strait.

Context and perspectives

The reports provide important context for the expansion. On April 13, the U.S. military began implementing a naval blockade of Iran. U.S. Central Command stated that the goal was to block "all maritime traffic entering and exiting Iranian ports." On May 4, the U.S. launched "Project Freedom" to help vessels pass through the Strait of Hormuz. However, the U.S. president suspended the effort the next day, citing a request from Pakistan and some other countries to allow time to see whether an agreement to resolve the conflict "can be finalized and signed."

Neither report independently verifies the claims, which rely on statements from an IRGC official and Iranian state media. No U.S. or international response to the latest announcement has been reported in these accounts. The strategic implications of the expansion are not fully analyzed, but the reports suggest Iran is asserting a larger maritime footprint in the region, potentially affecting shipping routes used by global energy supplies.

Sources: TASS (Russia), The Hindu (India) — both citing Fars and Tasnim news agencies. No independent confirmation was available at the time of writing.

How each outlet told it

TASS — English as of May 12, 2026, 1:16 PM UTC

Framing: Iran's expansion of the Strait of Hormuz in response to US actions — Informative

Facts Included:

The Iranian Armed Forces have expanded the Navy's control zone in the Strait of Hormuz
The strait's width has increased to between 200 and 300 miles
The US military began implementing a naval blockade of Iran on April 13
The US launched Project Freedom to help vessels pass through the Strait of Hormuz on May 4

Read the source article →

The Hindu — World as of May 13, 2026, 3:01 PM UTC

Framing: Regional tensions and Iran's expansion of the Strait of Hormuz — Informative

Facts Included:

Iran has expanded its definition of the Strait of Hormuz into a 'vast operational area'
The strait is now defined as a strategic zone stretching from the city of Jask in the east to Siri Island in the west
About a fifth of the world's oil and liquefied natural gas supply normally passes through the strait
The expanded zone forms a 'complete crescent'
The strait's width has increased to between 200 and 300 miles

Read the source article →

What was claimed, and who backed it

Each row is one claim, attributed to the outlet whose wording states it most clearly. Confidence rates how directly the source text states the claim — explicit and unhedged rates high; hedged, pieced-together, or internally inconsistent statements rate lower. It does not measure whether the claim is true. Status counts the distinct outlets we found asserting it — so a single-source claim can still show high confidence, and a multi-source claim can show medium. Every one of those outlets is named beside the status, so you can check the count against the list. For claims extracted before we began storing that list, the row says so: it names the outlet the claim is quoted from and states that we have not recorded which outlets backed it. Outlets wrote at different times, so a figure that evolves — a casualty count, for example — can legitimately differ between rows; check the "as of" time next to each claim's source.

Claim	Confidence	Status
ClaimIran has expanded its definition of the Strait of Hormuz into a 'vast operational area' far wider than before.	ConfidenceHigh	StatusMulti-source quoted from The Hindu — World as of May 13, 2026, 3:01 PM UTC the outlets behind this status were not recorded for this claim
ClaimThe strait is now defined as a strategic zone stretching from the city of Jask in the east to Siri Island in the west.	ConfidenceHigh	StatusMulti-source quoted from The Hindu — World as of May 13, 2026, 3:01 PM UTC the outlets behind this status were not recorded for this claim
ClaimAbout a fifth of the world's oil and liquefied natural gas supply normally passes through the strait.	ConfidenceHigh	StatusSingle-source via The Hindu — World as of May 13, 2026, 3:01 PM UTC
ClaimThe expanded zone forms a 'complete crescent'.	ConfidenceHigh	StatusSingle-source via The Hindu — World as of May 13, 2026, 3:01 PM UTC
ClaimThe strait's width has increased to between 200 and 300 miles.	ConfidenceHigh	StatusMulti-source quoted from The Hindu — World as of May 13, 2026, 3:01 PM UTC the outlets behind this status were not recorded for this claim
ClaimThe US military began implementing a naval blockade of Iran on April 13.	ConfidenceHigh	StatusSingle-source via TASS — English as of May 12, 2026, 1:16 PM UTC
ClaimThe US launched Project Freedom to help vessels pass through the Strait of Hormuz on May 4.	ConfidenceHigh	StatusSingle-source via TASS — English as of May 12, 2026, 1:16 PM UTC

Transparency & Audit Trail

2 outlets · 2 articles consulted: TASS — English, The Hindu — World 7 claims extracted Version 1 Written 2026-08-14