Iran blockade ‘going global’ is a warning signal to China and Russia

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On Tuesday, U.S.Marines from USS Tripoli once again fast-roped from their MH-60 Seahawk helicopters onto the deck of a suspicious container ship named Blue Star III heading for Iran.That makes a total of 39 vessels turned back, boarded or seized since April 13.

“The blockade has been unbelievably effective,” PresidentDonald Trumpsaid on Sunday.Economic pressure is the main point of the blockade, but it has military impact far beyond the Strait of Hormuz.

“We seized their sanctioned ships, and we will seize more,” U.S.Secretary of WarPete Hegsethbriefed at the Pentagon on Friday, April 24. “Our blockade is growing and going global,” Hegseth added.

“Going global” issending shockwaves through China.China imports at least 70% of its oil.Of that, 90% moves by sea.Iran alone supplied 14% of China’s imports last year, with Russia adding another 18%.Most of that oil was moved by shadow fleet tankers.

TRUMP CASTS MADURO’S OUSTER AS ‘SMART’ MOVE AS RUSSIA, CHINA ENTER THE FRAY

A white U.S. military helicopter hovers over the bright orange sanctioned stateless crude oil tanker M/T Tifani during an U.S. interdiction.

The blockade continues, as a U.S.military helicopter hovers over the sanctioned stateless crude oil tanker M/T Tifani during an interdiction on April 21, 2026.(Department of War)

For all the talk of China’s growing naval power, this sea power phase of Operation Epic Fury is an incredible boost to deterrence in the Pacific.The tactics and joint force coordination on display are not something China can easily match.The web of air and maritime surveillance, intelligence, financial forensics and sheer audacity is something only America can pull off.

Here’s why China and Russia should be very, very worried.

Merchant Vessel Touska

NO RETREAT AT HORMUZ — IRAN MUST NOT CONTROL THE WORLD’S ENERGY LIFELINE

The drama began in the wee hours of Sunday, April 19, when the Iranian-flagged container ship Merchant Vessel (M/V) Touska tried to enter the Strait of Hormuz and reach the Iranian port of Bandar Abbas.Touska was pedal-to-the-metal in merchant ship terms, steaming at 17 knots under cover of darkness.Lying in wait was theU.S.Navyguided-missile destroyer USS Spruance (DDG 111.)

Spruance had already caught a different Iranian ship sneaking out of the strait five days earlier, and Touska was highly visible.At 9 a.m., after multiple warnings, Spruance fired nine inert 5-inch shells into the engine room, leaving Touska dead in the water.Now that’s marksmanship.At 4 p.m., U.S.Marines from the amphibious ship USS Tripoli air-assaulted onto Touska and took the ship and crew into custody.

hauling oil from Iranto a spot off the coast of Malaysia, then offloading it onto China-bound ships.U.S.forces boarded MT Tifani, took control of the bridge, and took custody of 1.9 million barrels of oil.Street value: $171 million, at $90 per barrel.Next, the Motor Tanker Majestic X was boarded and seized in the Indian Ocean.Officially, it’s called maritime interdiction and right-of boarding, since MT Majestic X was a stateless vessel sanctioned back in 2024 for carrying Iranian oil.

Both Tifani and Majestic X are sailing west, in close proximity, on course for the U.S.MilitarySealift Command base at Diego Garcia.The Motor Vessel Blue Star III was luckier;the crew promised the Marines she was not bound for Iran, and they let her go on her way.With eyes on, no doubt.

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Historically, this year has seen the biggest haul of captured enemy vessels since President Franklin D.Roosevelt requisitioned 90 foreign merchant ships idling in American harbors in 1941.Don’t forget how U.S.Southern Command seizedseven Venezuelan oil tankersin the Caribbean in January.

As for Russia, PresidentVladimir Putin’s shadow fleet may also be at risk in global seas.Vladimir Putin and his cronies acquired a large, unflagged ghost fleet of tankers to evade sanctions after the 2022 invasion of Ukraine.The shadow fleet may top 770 vessels, moving 3.7 million barrels of oil per day.Mainly to China, of course.By taking ships on the high seas, Operation Epic Fury is demonstrating that the Russian shadow fleet could be next.

Dr.Rebecca Grant is vice president of the Lexington Institute.