Oil and gas was flowing relatively freely worldwide before the U.S.-Israeli attack, sparking a conflict that has increasingly centered on the tussle for control of the Strait of Hormuz โ€” a waterway through which some 20% of the worldโ€™s energy supplies traveled prior to the war.

Trump said Wednesday that the U.S. had โ€œtotal controlโ€ over the strait and described the American blockade of Iranian ports as a โ€œwall of steel.โ€

But traffic through the key trade route remains a trickle of the 130-140 vessels that typically traversed during peacetime. Though the U.S. is blockading Iranian ports, Iran continues to fire on ships attempting to transit.

Two tankers affiliated with the Abu Dhabi National Oil Co. were attacked while trying to cross the Strait on Thursday, the United Arab Emirates Foreign Ministry said in a statement, blaming Iran for the assault.

The vessels suffered minor damage and there were no reported injuries, according to the UAE and the United Kingdom Maritime Trade Operations Center. The UKMTO said the vessels were hit by aerial drones.

Vessels in the Strait of Hormuz, as seen from Musandam
Vessels in the Strait of Hormuz, as seen from Musandam, Oman, earlier this month.Reuters

Tehran says the key trade route will not reopen until its demands are met.

Iranian military spokesman Ebrahim Zolfaghari said Thursday that โ€œno vessel can safely transit the Strait of Hormuz without Iranโ€™s authorization and supervision,โ€ according to the state-controlled IRIB news agency. Iranian Foreign Minister Abbas Araghchi earlier in the day accused the U.S. of โ€œintelligence failuresโ€ and making a โ€œmiscalculationโ€ over Hormuz.

The U.S. has nonetheless remained bullish.

Defense Secretary Pete Hegseth told reporters Thursday that the U.S. could keep up its naval blockade on Iran โ€œindefinitelyโ€ because โ€œweโ€™ll rotate ships in and out, as we have, and weโ€™ll continue toโ€ do.

That comment followed news that the USS George Washington is now sailing to the Middle East and is expected to replace the USS Abraham Lincoln aircraft carrier, which has been at sea for some 250 days and not had a port call for more than 200. Families of some of the 5,000 sailors and Marines aboard the Lincoln describe low morale and deteriorating conditions.

Abraham Lincoln Sails In The Arabian Sea
The USS Abraham Lincoln sails in the Arabian Sea in May.U.S. Navy

The Trump administration seems to be doubling down on the new strategy of economic pressure.

โ€œWatch this space for more announcements coming next week,โ€ Treasury Secretary Scott Bessant told Newsmax on Thursday. โ€œWe are going to apply measures like have never been seen in the history of economic isolation on a country.โ€

He did not give details about what these measures might be. Trump has often lobbed verbal threats toward Tehran only to later back down, citing an imminent diplomatic breakthrough that has so far failed to materialize.

Meanwhile, the Hormuz impasse has shocked the world economy, not just limiting supplies of oil and gas, but also vital products such as fertilizer.

The international oil benchmark of Brent Crude sits just above $87 dollars a barrel, 45% higher than it was in January. The average price for a gallon of gas in the U.S. is now higher than $4; before the conflict it was lower than $3.