TEHRAN / WASHINGTON — In a dramatic expansion of its maritime restrictions, Iran’s Islamic Revolutionary Guard Corps (IRGC) officially declared on Friday, March 27, 2026, that all shipping “to and from ports of allies and supporters of the Israeli-American enemies” is strictly prohibited from transiting the Strait of Hormuz. The directive, reported by Iranian state media and confirmed by Reuters, applies to any corridor or destination, effectively placing a “selective blockade” on nearly all Western-aligned commercial traffic.
The IRGC warned that any attempt to bypass this ban will be met with “harsh measures,” further cementing Tehran’s control over the world’s most vital energy artery.
Three Ships Turned Back
The new policy was immediately enforced. According to the WANA News Agency, the IRGC Navy intercepted three container ships of various nationalities early Friday morning as they attempted to enter the designated “authorized corridor.”
- Interception: The vessels were hailed via VHF radio and forced to turn back under threat of “confrontation.”
- The “Ally” Clause: Unlike previous restrictions that targeted only U.S. or Israeli-flagged ships, this new ban extends to any vessel carrying cargo destined for—or originating from—countries Iran deems “supporters of the aggression.”
- The “Enemy” List: While not explicitly named in the directive, analysts suggest this includes the UK, France, and several Gulf states currently hosting U.S. forces.
Retaliation for “Operation Epic Fury”
The IRGC framed the move as a direct response to what it termed “falsehoods” from President Trump regarding the openness of the Strait and the ongoing U.S.-Israeli strikes.
- “Calculated Assaults”: Foreign Minister Abbas Araghchi addressed the UN on Friday, labeling the Feb 28 strike on a school in Minab a “calculated war crime” and using the blockade as a “defensive lever” to stop further aggression.
- Infrastructure Damage: Tehran reported today that U.S.-Israeli strikes have damaged over 120 museums and historic buildings, including the UNESCO-listed Golestan Palace, fueling the IRGC’s “scorched earth” rhetoric.
- The “Energy Reprieve” Deadline: The ban comes despite President Trump extending his deadline for Iran to “fully” reopen the Strait to April 6. Trump has threatened to target Iranian power plants and energy infrastructure if the blockade is not lifted by that date.
Current Shipping Realities
The maritime industry remains in a state of chaos, with the Strait “technically open, but effectively closed” for most global operators.
| Metric | Status (March 27, 2026) |
| Vessels Loitering | Over 350 ships (including 25 supertankers) are currently anchored outside the Strait awaiting “permits.” |
| Insurance | War-risk insurance has been withdrawn for most commercial hulls, making transit economically impossible. |
| Alternative Routes | 95% drop in traffic; many firms are rerouting around Africa’s Cape of Good Hope, adding weeks to transit times. |
| “Safe” Partners | India, China, and Pakistan remain in talks for “green flag” status via a new IRGC vetting system. |
What’s Next?
As the 10-day negotiation window continues, the IRGC’s latest ban significantly raises the stakes. If the U.S. and its allies attempt to escort a “banned” vessel through the Strait, it could trigger the first direct naval engagement of the war. Meanwhile, the EASA has extended its warning for airlines to avoid Gulf airspace until April 10, citing the extreme risk of “mis-interceptions” during this heightened maritime standoff.
