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strikeApr 16, 2026

How a US blockade on Iran has sanctioned ships turning around

Summary

The U.S. Navy's sea blockade against Iran appears to be working. Iran-linked or sanctioned vessels that have left the Persian Gulf through the Strait of Hormuz have stopped or turned around, shipping data firms say. They appear to have jammed or faked their locations in some instances, complicating an uncertain and risky shipping situation. You may follow our live coverage of the West Asia war here The blockade that started Monday "has been fully implemented," said Adm. Brad Cooper, head of U.S. Central Command. "U.S. forces have completely halted economic trade going in and out of Iran by sea." The action could put serious pressure on the Iranian economy, while Tehran's earlier cutoff of the waterway crucial to oil and gas supplies has sent energy prices higher during the war with the U.S. and Israel. Here are key things to know about the blockade and the situation at the Strait of Hormuz: How the US Navy is enforcing the blockade The blockade is being enforced "impartially against all vessels of all nations entering or leaving coastal areas or ports in Iran," U.S. Central Command said. Vessels avoiding Iranian ports are not affected. The military set up the blockade in the Gulf of Oman beyond the Strait of Hormuz, a U.S. official said. The official, who spoke on condition of anonymity to discuss sensitive military operations, said the strategy is to observe vessels subject to the blockade leave Iranian facilities and clear the strait before intercepting them and forcing them to turn around. The official said that the military relies on more than just automated tracking beacons that all merchant ships are required to carry, called AIS, to determine merchant ships were coming from a port in Iran but wouldn't go into more detail citing the need for operational security. Ships are turning around as traffic adjusts U.S. Central Command said Wednesday that no vessels have made it past its forces during the first 48 hours of the blockade. It noted that nine vessels have complied with directions to turn around and return toward an Iranian port or Iran's coastal area. Navy warships are telling merchant ships that they are ready to board them and use force to compel compliance. On Tuesday, the first full day of the blockade, only eight vessels, most of them linked to Iran or sanctioned, transited the strait, said Ana Subasic, trade risk analyst at data and analytical firm Kpler. The environment is still considered "extremely high risk" despite the ceasefire, she said. "Most of the vessels have appeared to halt or have reduced movement after clearing the strait," she said, "which tells us that the effect of the blockade is starting to show up because most of these vessels that have crossed have some kind of history with carrying Iranian-origin sanctioned cargo." The Rich Starry, a Chinese-owned tanker previously sanctioned by the U.S. for smuggling Iranian petroleum products, left the strait and then turned back this week, according to publicly available ship tracking data. Radio transponder data for the vessel, which is sailing under the flag of the landlocked East African nation of Malawi, shows it entered the Persian Gulf on April 4 empty of cargo. It turned off its transponder for more than a week, a tactic smugglers often use called "running dark" to avoid showing its location. The Rich Starry's signal popped back up off the United Arab Emirates on Monday laden with oil, though it is possible the ship wasn't transmitting its accurate location. Smugglers sometimes "spoof" their locations by transmitting inaccurate coordinates. The ship went through the Strait of Hormuz on Monday night before abruptly reversing course in the Gulf of Oman on Tuesday, heading back through the strait and toward Iran's coast Wednesday. Other Iran-linked tankers transited the strait this week only to stop. For example, the oil-products tanker Elpis left Iranian waters Monday, passed through the strait before cutting its engines in the Gulf of Oman, tracking data shows. The ship turned off its radio transponder Tuesday and its current location couldn't be independently verified. Also read: US ends sanctions waiver for Russian, Iranian Oil; India among affected buyers Maritime intelligence firm Windward said that vessel behavior was "indicating a fragmented and uneven response to the blockade" as sanctioned and false-flagged vessels continued to be active, some transiting the strait, others delaying or reversing course. Trying to break Iran's chokehold Iran has blocked the strait by threatening to attack shipping, cutting off 20% of the world's typically daily oil consumption, sending oil prices sharply higher and leading to warnings about higher inflation and recessions in leading economies. Vessels were hit with aerial and undersea drones as well as unknown projectiles, killing 11 crew members. While those attacks have dwindled, the risk of navigating the area means that ship traffic has dropped by more than 90%. Some of that blocked oil is making it out from Gulf producing nations through pipelines to the Red Sea and the Gulf of Oman. But those pipelines can't make up for the effective closure of the strait. Iran has started vetting and collecting money from the few vessels daring to pass. Vessels must submit detailed information on cargo and crew to the paramilitary Revolutionary Guard and pay a $1 fee per barrel of oil or fuel products before being allowed to pass, according to Kpler. The US blockade has a rule book The terms of the U.S. blockade have contributed to some uncertainty. According to a notice to mariners, the blockade is being enforced in the Gulf of Oman and the Arabian Sea, not at the Strait of Hormuz. So simply passing the strait doesn't mean a vessel beat the blockade. "Humanitarian shipments including food and medical supplies essential for the survival of the civilian populations" can pass with inspections. That last provision aligns with international law on naval warfare, which bars blockades solely intended to starve civilians, according to a legal guide from the U.S. Naval War College cited by maritime historian Sal Mercogliano, who runs a YouTube channel on shipping. "Neutral" ships can pass - though they may be inspected - but it's not clear what "neutral" means. The Lloyd's List Intelligence maritime data firm said the U.S. action "has plunged shipowners into fresh uncertainty around enforcement." So ships from Iranian ports can be detected passing the strait - and still face the risk of being stopped farther out. Container ships heading for Iranian ports could be allowed in or out if they're carrying food - or not, if they're carrying other goods. Iran says it would halt Gulf trade if blockade doesn't end Unless Iran can export oil, available storage will fill up and it will have to shut down wells that are difficult to restart. Additionally, Iran imports gasoline since it lacks the refinery capacity to turn its own oil into fuel. The commander of Iran's joint military command warned Wednesday that Iran would completely block exports and imports across the Persian Gulf region, the Sea of Oman and the Red Sea if the U.S. does not lift its blockade on Iranian ports. "Iran will act with strength to defend its national sovereignty and its interests," Ali Abdollahi said. He added that the U.S. blockade is "a prelude to violating the ceasefire." (You can now subscribe to our Economic Times WhatsApp channel) Iran-linked or sanctioned vessels that have left the Persian Gulf through the Strait of Hormuz have stopped or turned around, shipping data firms say. They appear to have jammed or faked their locations in some instances, complicating an uncertain and risky shipping situation. You may follow our live coverage of the West Asia war here The blockade that started Monday "has been fully implemented," said Adm. Brad Cooper, head of U.S. Central Command. "U.S. forces have completely halted economic trade going in and out of Iran by sea." The action could put serious pressure on the Iranian economy, while Tehran's earlier cutoff of the waterway crucial to oil and gas supplies has sent energy prices higher during the war with the U.S. and Israel. Here are key things to know about the blockade and the situation at the Strait of Hormuz: How the US Navy is enforcing the blockade The blockade is being enforced "impartially against all vessels of all nations entering or leaving coastal areas or ports in Iran," U.S. Central Command said. Vessels avoiding Iranian ports are not affected. The military set up the blockade in the Gulf of Oman beyond the Strait of Hormuz, a U.S. official said. The official, who spoke on condition of anonymity to discuss sensitive military operations, said the strategy is to observe vessels subject to the blockade leave Iranian facilities and clear the strait before intercepting them and forcing them to turn around. The official said that the military relies on more than just automated tracking beacons that all merchant ships are required to carry, called AIS, to determine merchant ships were coming from a port in Iran but wouldn't go into more detail citing the need for operational security. Ships are turning around as traffic adjusts U.S. Central Command said Wednesday that no vessels have made it past its forces during the first 48 hours of the blockade. It noted that nine vessels have complied with directions to turn around and return toward an Iranian port or Iran's coastal area. Navy warships are telling merchant ships that they are ready to board them and use force to compel compliance. On Tuesday, the first full day of the blockade, only eight vessels, most of them linked to Iran or sanctioned, transited the strait, said Ana Subasic, trade risk analyst at data and analytical firm Kpler. The environment is still considered "extremely high risk" despite the ceasefire, she said. "Most of the vessels have appeared to halt or have reduced movement after clearing the strait," she said, "which tells us that the effect of the blockade is starting to show up because most of these vessels that have crossed have some kind of history with carrying Iranian-origin sanctioned cargo." The Rich Starry, a Chinese-owned tanker previously sanctioned by the U.S. for smuggling Iranian petroleum products, left the strait and then turned back this week, according to publicly available ship tracking data. Radio transponder data for the vessel, which is sailing under the flag of the landlocked East African nation of Malawi, shows it entered the Persian Gulf on April 4 empty of cargo. It turned off its transponder for more than a week, a tactic smugglers often use called "running dark" to avoid showing its location. The Rich Starry's signal popped back up off the United Arab Emirates on Monday laden with oil, though it is possible the ship wasn't transmitting its accurate location. Smugglers sometimes "spoof" their locations by transmitting inaccurate coordinates. The ship went through the Strait of Hormuz on Monday night before abruptly reversing course in the Gulf of Oman on Tuesday, heading back through the strait and toward Iran's coast Wednesday. Other Iran-linked tankers transited the strait this week only to stop. For example, the oil-products tanker Elpis left Iranian waters Monday, passed through the strait before cutting its engines in the Gulf of Oman, tracking data shows. The ship turned off its radio transponder Tuesday and its current location couldn't be independently verified. Also read: US ends sanctions waiver for Russian, Iranian Oil; India among affected buyers Maritime intelligence firm Windward said that vessel behavior was "indicating a fragmented and uneven response to the blockade" as sanctioned and false-flagged vessels continued to be active, some transiting the strait, others delaying or reversing course. Trying to break Iran's chokehold Iran has blocked the strait by threatening to attack shipping, cutting off 20% of the world's typically daily oil consumption, sending oil prices sharply higher and leading to warnings about higher inflation and recessions in leading economies. Vessels were hit with aerial and undersea drones as well as unknown projectiles, killing 11 crew members. While those attacks have dwindled, the risk of navigating the area means that ship traffic has dropped by more than 90%. Some of that blocked oil is making it out from Gulf producing nations through pipelines to the Red Sea and the Gulf of Oman. But those pipelines can't make up for the effective closure of the strait. Iran has started vetting and collecting money from the few vessels daring to pass. Vessels must submit detailed information on cargo and crew to the paramilitary Revolutionary Guard and pay a $1 fee per barrel of oil or fuel products before being allowed to pass, according to Kpler. The US blockade has a rule book The terms of the U.S. blockade have contributed to some uncertainty. According to a notice to mariners, the blockade is being enforced in the Gulf of Oman and the Arabian Sea, not at the Strait of Hormuz. So simply passing the strait doesn't mean a vessel beat the blockade. "Humanitarian shipments including food and medical supplies essential for the survival of the civilian populations" can pass with inspections. That last provision aligns with international law on naval warfare, which bars blockades solely intended to starve civilians, according to a legal guide from the U.S. Naval War College cited by maritime historian Sal Mercogliano, who runs a YouTube channel on shipping. "Neutral" ships can pass - though they may be inspected - but it's not clear what "neutral" means. The Lloyd's List Intelligence maritime data firm said the U.S. action "has plunged shipowners into fresh uncertainty around enforcement." So ships from Iranian ports can be detected passing the strait - and still face the risk of being stopped farther out. Container ships heading for Iranian ports could be allowed in or out if they're carrying food - or not, if they're carrying other goods. Iran says it would halt Gulf trade if blockade doesn't end Unless Iran can export oil, available storage will fill up and it will have to shut down wells that are difficult to restart. Additionally, Iran imports gasoline since it lacks the refinery capacity to turn its own oil into fuel. The commander of Iran's joint military command warned Wednesday that Iran would completely block exports and imports across the Persian Gulf region, the Sea of Oman and the Red Sea if the U.S. does not lift its blockade on Iranian ports. "Iran will act with strength to defend its national sovereignty and its interests," Ali Abdollahi said. He added that the U.S. blockade is "a prelude to violating the ceasefire." (You can now subscribe to our Economic Times WhatsApp channel) ...more (Catch all the Business News, Breaking News and Latest News Updates on The Economic Times.) Subscribe to The Economic Times Prime and read the ET ePaper online. (You can now subscribe to our Economic Times WhatsApp channel) Read More News on ...more (Catch all the Business News, Breaking News and Latest News Updates on The Economic Times.) Subscribe to The Economic Times Prime and read the ET ePaper online.

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    The U.S. Navy's sea blockade against Iran appears to be working. Iran-linked or sanctioned vessels that have left the Persian Gulf through the Strait of Hormuz have stopped or turned around, shipping data firms say. They appear to have jammed or faked their locations in some inst

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The White House is now apparently using Russian tactics to convince the American public that the war in Iran is not, in fact, a war. When asked by reporters at the White House on Thursday whether the most intense sustained air campaign by American forces since the invasion of Iraq would be over by the midterms, Vice President JD Vance replied: “I wouldn’t call it a war.

” Vladimir Putin said much the same thing when he invaded Ukraine. Russia was not fighting a war either, the Kremlin insisted; it was merely conducting a “special military operation.” If that comparison strikes you as shocking, consider the contours of the two conflicts.

A vastly more powerful military launched a punishing offensive against a smaller, less well-equipped adversary, inflicted enormous damage without achieving a decisive resolution, and then found itself drawn into a longer, grinding conflict with no clear way out.

The motivations behind the wars may be different, and they’re playing out in different theaters, but the pattern is eerily similar. Now, so too is the attempt by those in power to control how the public understands, and even what it is allowed to call, the obvious war unfolding in front of them.

If This Isn’t a War, What Is? Let us take a moment to assess what exactly has happened since February 28, when the U.S. launched Operation Epic Fury. The opening U.S.-Israeli attack killed Iran’s supreme leader, Ali Khamenei, along with the commander of the Revolutionary Guard, the defense minister and various other senior officials.

According to the U.S. military’s own accounting, the first 38 days of major combat operations involved more than 10,200 sorties and 13,500 strikes. U.S. Central Command (CENTCOM) says those attacks damaged or destroyed more than 85 percent of Iran’s ballistic missile, drone and naval defense industrial base, while knocking out 82 percent of its air-defense missile systems.

The U.S. sent carrier strike groups and warships into the region, later imposing a military blockade on Iranian ports. Meanwhile, American and allied air defenses intercepted more than 6,000 Iranian attack drones and 1,500 ballistic missiles fired at U.

S. forces, Israel and American partners across the Middle East. More than 50,000 U.S. service members remain deployed across the region. The fighting has killed 18 U.S. service members and at least 8,000 people across Iran, Lebanon, Israel and the Gulf states.

More than 750 U.S. service members have been wounded. Last month, during a lull in the fighting, the U.S. Treasury unveiled a sanctions package likened to an “economic D-day” that is designed to make Iran an “economic outcast” and cut the adversary off from all available forms of economic support.

In the announcement, Treasury Secretary Scott Bessent openly declared that Iran had been “at war against America” for 47 years. This week, the shooting resumed; the U.S. hit targets in and around the Strait of Hormuz, and Iran blasted missiles at targets in Kuwait, Bahrain, Jordan and Iraq.

All this from an administration that almost exactly a year ago launched a rapid rebrand of the Defense Department into the “Department of War”. No boots on the ground, though, so it’s not a war, right? Tell It Kind of Like It Is Even the very best snake-oil salesman would have a hard time convincing people that the war in Iran isn’t a war.

So why is JD Vance even trying? Well, if there’s one thing politicians understand better than anyone, it’s the importance of language and rhetoric. Words have immense power; a well-written speech can unite millions of people, and a catchy slogan like Make America Great Again can come to represent an entire political philosophy.

But war is a pesky word. For one, it implies there will eventually be a winner and a loser. It also brings with it certain expectations—and some very difficult questions. What is the objective? How many people will die? When will it end? And, perhaps most dangerously of all: was it worth it?

Those are not questions the White House wants Americans to be asking. Trump built a substantial part of his political identity around ending, rather than beginning, America’s “endless wars.” When Washington and Tehran signed a memorandum of understanding in June, the White House presented it as proof that Trump’s America First approach could deliver peace without another prolonged Middle Eastern conflict.

Then the hostilities started again. Earlier this week, Trump shared a Truth Social graphic declaring that “Hormuz Oil Volumes are BACK!”, saying 18 million barrels a day were once again leaving the Strait, compared with 20 million before the war. No independent commodity tracking company or energy analyst appeared to verify Trump’s claims.

But most Americans won’t be checking tanker-tracking dashboards. What they’ll care about is the cold, hard fact that diesel hit a new record price this morning, soaring to an average of $5.85 a gallon for the first time ever. Gasoline is $4.15 a gallon on average, compared with $3.

20 at this time last year, according to AAA. The numbers on the sign at the gas station and the price on the grocery receipt aren’t affected by Trump’s tall tales, but they’ll surely affect how Americans vote at the midterms. When viewed in this light, Vance’s attempt to discourage reporters from “call[ing] it a war” begins to make sense.

A war is something that we want to end. It tends to result in a winner and a loser. And its worth is up for debate at all times. A different kind of engagement that doesn’t quite meet the threshold of war—say, a special military operation—is not exposed to the same kind of scrutiny.

Vance effectively made that case himself. “When you ask, ‘When will this end?’ You’re asking me a question like, ‘When will the Iranians stop shooting at ships?’” he said. By that logic, there is no American war—only recurring Iranian provocations that require American military responses.

That’s exactly the logic applied by Putin to Ukraine and supposed expansion of NATO. Putting the Toothpaste Back in the Tube U.S. lawmakers have repeatedly invoked the War Powers Resolution to challenge Trump’s authority to keep fighting Iran without specific congressional authorization.

The law generally gives a president 60 days after U.S. forces enter “hostilities” to secure congressional approval or bring those hostilities to an end. That makes the pauses in fighting hugely important. When the original 60-day deadline arrived in May, Trump told Congress that the temporary ceasefire reached in April meant the hostilities that began on February 28 had ended.

Defense Secretary Pete Hegseth argued that the War Powers clock could “pause, or stop” when the shooting did. That position is disputed by legal experts, but its political utility is obvious. If every new outbreak of fighting can be treated as a separate skirmish, rather than part of one continuous war, the administration can argue that a fresh 60-day clock starts each time.

Vance’s insistence that there is no continuing “war” fits neatly for an administration that has already tried to divide six months of conflict into separate periods of hostilities, interrupted by ceasefires and pauses. This brings us back to Moscow.

The Kremlin’s own linguistic trick was also about making one sprawling war sound smaller, more limited and more manageable than it really was. From the very beginning of the invasion, Putin described the war as a special military operation. Only after two years of grinding warfare did Kremlin spokesman Dmitry Peskov openly declare Russia to be in a “state of war”—and even then, he said the transformation had occurred because the “collective West” had joined the fight against Russia.

Vance is playing a similar game, but in reverse. Only now—with soaring fuel prices, mounting casualties, concerns over the military’s munitions stockpiles, and midterm elections on the horizon—is the conflict no longer a war. You can’t put the genie back in the bottle, though, and the American people aren’t stupid.

Vance and the White House may discover in November that voters are perfectly capable of recognizing a war, even when the vice president doesn’t want to call it one.

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