The fragile interim deal between Washington and Tehran didn't even survive three weeks.
On Tuesday evening, U.S. Central Command confirmed a fresh wave of military strikes against Iranian targets. The action follows a series of Iranian attacks on three commercial vessels passing through the Strait of Hormuz, including a Very Large Crude Carrier and an LNG tanker.
If you've been following the Persian Gulf crisis, this outcome shouldn't surprise you. The June 18 interim agreement promised free transit through the waterway in exchange for limited sanctions relief. Instead, it created a high-stakes guessing game over maritime routing that was bound to blow up.
What Triggered the Latest Round of US Military Strikes
The immediate catalyst was a series of strikes on merchant ships navigating near Oman.
Iran targeted three vessels traveling along the southern portion of the strait over a 24-hour period. One hit involved a British-flagged oil tanker struck by a projectile just eight nautical miles east of Limah, Oman, which sparked an onboard fire.
Iran's state media claimed the ships ignored explicit warnings from Iranian forces. Tehran created its own maritime oversight body, demanding that all commercial traffic follow Iranian-designated corridors. When ship operators chose routes recommended by U.S. forces and the International Maritime Organization along the Omani coast, Iranian forces opened fire.
CENTCOM responded at 5:15 p.m. Eastern Time, targeting Iranian missile sites, drone launch infrastructure, and coastal radar installations.
"Iran's actions in the Strait were wholly unacceptable to the United States and will be met with consequences," a senior U.S. official stated following the strikes.
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The Revoked Oil Waiver and the Collapsing Diplomatic Framework
Military retaliation wasn't the only move Washington made on Tuesday.
The U.S. Treasury Department officially revoked an authorization allowing Iran to export crude oil, refined products, and petrochemicals. That waiver served as the primary economic incentive for Tehran to sign the June 18 memorandum of understanding.
Taking away that revenue stream effectively guts the temporary truce.
Iranian Deputy Foreign Minister Kazem Gharibabadi called the decision a blatant breach of the agreement's tenth section, which guaranteed oil export permissions. Tehran warned it will take whatever steps necessary to defend its security interests, while its top diplomat noted negotiations won't resume under direct American threats.
The timing couldn't be worse. Formal diplomatic talks were already paused as Iran observed a weeklong funeral period for former Supreme Leader Ayatollah Ali Khamenei.
Speaking from the NATO summit in Ankara, President Donald Trump made his position clear, warning that the U.S. would either reach a permanent deal or "finish the job."
Energy Markets and Shipping Lines Face Immediate Fallout
Global energy markets reacted instantly to the escalation.
Brent crude futures jumped past $73 a barrel, while West Texas Intermediate climbed above $72. Analysts had driven prices down earlier in the week on hopes of diplomatic progress. Those gains vanished the moment news of the ship attacks broke.
The maritime trade situation is deteriorating just as quickly:
- The United Kingdom Maritime Trade Operations raised the threat level in the Gulf waterway to severe.
- Commercial ship traffic through Hormuz had barely recovered to 30 percent of pre-conflict levels before these attacks.
- Shipping insurance premiums for tankers attempting the transit are expected to spike to unsustainable levels.
Around 20 percent of world petroleum traffic passes through this narrow choke point. When tankers burn in the strait, every energy consumer pays the price at the pump.
Key Steps for Energy Markets and Shipping Operators
With diplomatic channels frozen and military exchanges resuming, expect high volatility across global energy and shipping sectors.
- Track official maritime advisories: Ship captains and operators should strictly rely on updated UKMTO and U.S. Fifth Fleet routing directives rather than unverified regional communications.
- Prepare for oil price volatility: Businesses with direct exposure to fuel costs need to hedge against sudden supply disruptions as long as CENTCOM and the IRGC exchange fire.
- Monitor the August 21 deadline: The original interim deal set late August as the target for a permanent settlement. Watch whether both sides return to the table once Iran completes its national mourning period.
