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US keeps seizing Iran-linked tankers after lifting Hormuz blockade

US keeps seizing Iran-linked tankers after lifting Hormuz blockade

Force in Play

A bounded Gulf blockade has become an open-ended, global hunt for Iran's shadow-fleet oil

Yesterday: US forces board the Davina in the Indian Ocean

Overview

The US lifted its naval blockade of Iran on May 29. A week later, American forces fast-roped onto a supertanker in the Indian Ocean, thousands of miles from the Gulf.

The blockade that choked the Strait of Hormuz is over. The campaign behind it is not. US forces are now boarding Iran-linked tankers across open water, under a different command and an open-ended order to act 'wherever they operate.'

Why it matters

About a fifth of the world's seaborne oil passes Iran's coast; the US interdiction campaign now reaches that trade far beyond the Gulf.

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Key Indicators

$5.8B
Iran oil revenue lost
Combined April and May 2026 losses from blocked exports.
84%
Drop in Iran oil revenue vs March
May exports fell below 300,000 barrels a day from nearly 2 million.
129
Vessels redirected since April
US forces also disabled six others during the campaign.
2 million barrels
Davina crude capacity
The boarded supertanker can carry up to two million barrels.
60 days
Ceasefire memorandum window
The May 29 deal set a 60-day window for nuclear talks.

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People Involved

Organizations Involved

Timeline

February 2026 June 2026

6 events Latest: Yesterday
Tap a bar to jump to that date
  1. US forces board the Davina in the Indian Ocean

    Latest Interdiction

    Indo-Pacific Command announces an overnight boarding of the stateless supertanker Davina off Sri Lanka. It is the third such interdiction in the Indian Ocean since April, and it lands after the formal blockade ended.

  2. Trump announces blockade lifted under 60-day memorandum

    Diplomacy

    A 60-day memorandum extends the ceasefire and opens nuclear talks. Iran disputes parts of the terms. Restrictions in the strait are to ease; Iran is to clear mines within 30 days.

  3. US forces board sanctioned tanker MT Tifani

    Interdiction

    Another boarding tightens pressure on tankers tied to Iran's oil trade.

  4. USS Spruance seizes Iranian cargo ship Touska

    Interdiction

    US forces disable the ship's engine and take control, an early seizure under the blockade.

  5. US naval blockade of Iran takes effect

    Military Action

    Under CENTCOM and Admiral Brad Cooper, the US blockades vessels traveling to or from Iranian ports.

  6. US and Israel strike Iran; Hormuz traffic halts

    Conflict

    Airstrikes hit Iranian military and government sites. Shipping through the Strait of Hormuz largely stops.

Historical Context

3 moments from history that rhyme with this story — and how they unfolded.

July 1987-August 1988

The Tanker War and Operation Earnest Will (1987-1988)

During the Iran-Iraq War, both sides attacked oil tankers in the Gulf. The US reflagged Kuwaiti tankers as American and escorted them through the strait. Clashes followed, including the 1988 Operation Praying Mantis, the largest US surface naval battle since World War II.

Then

US escorts kept oil moving and damaged Iran's navy. The fighting raised the risk of wider war in the Gulf.

Now

It set a precedent for the US Navy policing Gulf shipping lanes, a role it has played in some form ever since.

Why this matters now

It shows the US using naval force to keep oil flowing on its terms in the same waters, and how quickly tanker clashes can escalate.

July 2019

Gibraltar tanker seizures (2019)

British forces seized the Iranian tanker Grace 1 off Gibraltar over suspected sanctions-busting oil shipments to Syria. Iran responded weeks later by seizing the British-flagged Stena Impero in the Strait of Hormuz.

Then

Both ships were eventually released after a tense standoff. Shipping insurers raised premiums across the Gulf.

Now

The episode mapped out the tit-for-tat pattern of tanker seizures that still governs US-Iran maritime friction.

Why this matters now

It is the clearest recent model for how boarding one Iran-linked tanker can trigger Iranian retaliation against other ships.

October 1962

Cuban Missile Crisis quarantine (1962)

President Kennedy ordered a naval 'quarantine' of Cuba to stop Soviet missile shipments. The US chose that word over 'blockade,' which is an act of war under international law. US ships stopped and inspected vessels bound for the island.

Then

The Soviet Union turned its ships around and removed the missiles. The world stepped back from nuclear war.

Now

It became the textbook case of naval interdiction used as coercion short of open conflict.

Why this matters now

It explains why naming matters: a 'blockade' carries legal weight, so framing today's effort as 'enforcement wherever they operate' keeps options open.

Sources

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