U.S. Treasury Secretary Scott Bessent delivered a stark warning to Iran on April 27, 2026, declaring that surviving leaders of the Islamic Revolutionary Guard Corps are “trapped like drowning rats in a sewage pipe” as the American naval blockade continues to strangle the country’s oil industry.
“While the surviving IRGC Leaders are trapped like drowning rats in a sewage pipe, Iran’s creaking oil industry is starting to shut in production thanks to the U.S. BLOCKADE,” Bessent wrote on X, adding: “Pumping will soon collapse. GASOLINE SHORTAGES IN IRAN NEXT!”
Iran’s Oil Industry Faces Critical Storage Crisis
Iranian oil supply is entering a phase of forced adjustment as physical storage capacity nears exhaustion while reservoir management challenges compound the pressure on output. With exports effectively halted under a U.S. naval blockade, unused onshore storage is projected to last between 12 and 24 days at current accumulation rates, raising the prospect of accelerated production shut-ins that could reach an additional 1.5 million barrels per day by mid-May.
According to The Wall Street Journal, Iran is resorting to extreme measures to conserve storage space, including using containers and “junk storage”—disused tanks in poor condition—in southern oil hubs. The regime is also attempting to send oil by rail to China, a far less profitable method than seaborne transport.
The immediate trigger stems from a sharp decline in loadings following the imposition of the U.S. naval blockade in early April. Iranian crude exports, which averaged about 1.85 million barrels per day in March, have fallen to roughly 567,000 barrels per day in recent weeks. Loadings have plunged by approximately 70 percent since the blockade took effect.
Bessent Warns Companies Against Aiding Iranian Airlines
In a separate statement shared first with The Wall Street Journal, Bessent warned that companies providing services to sanctioned Iranian airlines risk U.S. sanctions.
“Doing business with sanctioned Iranian airlines risks exposure to U.S. sanctions,” Bessent said. “The Treasury will impose maximum pressure on Iran and will not hesitate to act against any third parties that facilitate or conduct business with Iranian entities.”
The warning came as Iran resumed some commercial flights since the conflict began, with state media announcing departures for Turkey, Oman, and Saudi Arabia from Tehran.
Economic Fury Campaign Intensifies
On April 15, 2026, the U.S. Treasury’s Office of Foreign Assets Control announced a major sanctions action under its “Economic Fury” campaign, targeting illicit Iranian oil transportation networks and Hizballah‑linked financing schemes. The action designates more than two dozen individuals, entities, and vessels connected to Iranian regime elites, oil smuggling, and terrorist financing.
Treasury also sanctioned China-based independent teapot refinery Hengli Petrochemical (Dalian) Refinery Co., Ltd., one of Iran’s largest customers for crude oil having purchased billions of dollars’ worth of Iranian petroleum. Additionally, OFAC is targeting approximately 40 shipping firms and vessels that operate as part of Iran’s shadow fleet.
“The Iranian regime must be held accountable for its extortion of global energy markets and indiscriminate targeting of civilians with missiles and drones,” Bessent said. “Under President Trump’s leadership, as part of Economic Fury, Treasury will continue to follow the money and target the Iranian regime’s recklessness and those who enable it.”
IRGC Leadership Decimated
The 2026 Iran war did more than escalate regional tensions—it dismantled key layers of Iran’s leadership in a coordinated wave of targeted strikes. From Supreme Leader Ali Khamenei to senior military planners and intelligence officials, at least 16 high-ranking figures were killed, signaling what analysts describe as a “decapitation strategy” aimed at disrupting Iran’s command structure.
At least 11 senior members of the IRGC have been killed since the start of the war, including Major General Mohammad Pakpour, the IRGC’s commander-in-chief, and Major General Majid Khademi, the head of the organisation’s intelligence division.
On Saturday, February 28, 2026, the Islamic Republic’s power structure suffered what was undoubtedly its most significant shock. Ali Khamenei, the Supreme Leader, was killed along with around 40 senior military commanders in US and Israeli strikes on Tehran.
Blockade Timeline and Scope
On 13 April 2026, the United States imposed a naval blockade on Iran following the failure of the Islamabad Talks to end the 2026 Iran war. The U.S. military said the blockade began on Monday, 13 April 2026 at 10 a.m. ET and will apply only to ships going to and from Iran.
For much of the war, a key US goal was reopening the critical Strait of Hormuz. But when Iranian negotiators failed to reach an agreement with American counterparts this month, President Donald Trump switched tactic, launching what his Defense Secretary Pete Hegseth called an “iron-clad” naval blockade on Iran from the Gulf of Oman to the “open oceans.”
US Central Command has portrayed the blockade as increasingly effective. In its latest update on April 25, CENTCOM said US forces had “redirected” 37 vessels since the blockade began against ships entering or departing Iranian ports on April 13.
Storage Running Out
“When you have to turn it off because you have no place to store this oil, either put it on ships or storage tanks, which they are just about finished with, a very bad thing is going to happen,” Trump said on Sunday. The UK-based Critical Threats Project at the American Enterprise Institute and Energy Aspects estimated that Iran’s storage space will run out in the next week.
President Trump’s mid-April blockade of the Strait of Hormuz is largely about forcing Iran’s oil industry to confront the “shut-in date” when its oil storage capability is exhausted and production literally stops. That would be a dramatic economic development for Iran, as oil wells are difficult to restart and there is a risk of permanent damage.
Global Energy Impact
The International Energy Agency has characterised the situation caused by the war as the “largest supply disruption in the history of the global oil market.”
For many Americans, the biggest impact of the Iran war may be at the gas station, where average prices are up over $1 per gallon since the conflict started due to the global oil supply shortage. As of Friday, the average cost for a gallon of gas in the U.S. was $4.06.
Already, California’s gasoline prices are 45% above the national average. The national average on April 23 for a gallon of regular unleaded was $4.03; meanwhile, it’s a U.S.-leading $5.85 in California.