IRGC Claims Retaliatory Strike on US Air Base After Bandar Abbas Attack

Iran’s Islamic Revolutionary Guard Corps said Thursday it struck a US air base at 4:50 AM local time (01:50 GMT) in retaliation for Washington’s overnight strikes near Bandar Abbas airport, the semi-official Tasnim news agency reported. In its statement the IRGC vowed a “more decisive” response if US attacks continue and said responsibility for further escalation falls on US allies hosting American forces. The IRGC did not identify which base it targeted, disclose the munitions used or claim damage; US Central Command has not yet confirmed an impact.

The retaliation comes hours after US forces struck targets near Bandar Abbas airport in southern Iran, extending a strike cycle that began three days earlier and that the administration has framed as a response to Iranian fire on US assets in the Gulf. The original Bandar Abbas operation hit infrastructure adjacent to the IRGC Navy’s main southern hub and one of the operational nodes for Iran’s choke-point posture at the Strait of Hormuz. Thursday’s pre-dawn US action was the first restrike against the same axis since the initial sortie, and the IRGC’s response timeline — under four hours from US impact to Iranian claim — is the tightest counter-tempo of the cycle so far.

Hormuz under live fire

The exchange landed on a strait that was already running hot. Iran’s state broadcaster IRIB said Thursday morning that Iranian forces had fired at four vessels attempting to cross the Strait of Hormuz into the Persian Gulf without clearance from Iranian security forces. “Four vessels attempted to cross the Strait of Hormuz and enter the Persian Gulf without coordination with the security forces,” IRIB said, per Middle East Eye’s translation. The incident is the first known live-fire enforcement action under the transit-permission regime Tehran rolled out earlier in the week and the explicit “hostile country” ban the IRGC layered on top of it Wednesday. Flag, ownership and destination of the four vessels have not been disclosed by Iran or by any coalition naval command.

Market reaction

Crude reacted within the hour. WTI traded at $90.51 a barrel, up 2.06%, and Brent at $96.34, up 2.17%, after the US strikes near Bandar Abbas hit the wires, according to OilPrice’s tape timed to 01:49 GMT — minutes before the IRGC’s counter-strike claim. The move puts Brent within sight of the cycle highs set during the late-April shock. It reverses two sessions of consolidation that had followed reports of backchannel ceasefire talks. Asia-session pricing will absorb the IRGC retaliation claim and the four-ship fire incident in tandem; the read across to refined product cracks, tanker day-rates and Gulf-loading insurance premia will follow on the European open.

Diplomatic temperature

The diplomatic frame around the kinetic exchange hardened in parallel. President Trump threatened to “blow up” Oman if Muscat joins Iran in imposing transit fees on Hormuz traffic, Middle East Eye reported Thursday. Oman has been the principal third-country mediator between Washington and Tehran for two decades and is the host venue for the on-again, off-again nuclear and de-escalation tracks that have run through the current crisis. A direct US presidential threat against the mediator is structurally inconsistent with a live backchannel, and Omani officials have not publicly responded. The administration has not clarified whether the threat was rhetorical or reflects a contingency under active consideration.

Analysis: what to watch

The next 24 hours will turn on four questions.

First, does the deal track survive the day. The Oman threat and the IRGC’s “more decisive” language together compress the diplomatic envelope. If Muscat steps back from the mediator role, the next-nearest venues — Doha, Geneva, Vienna — each carry their own friction, and the transition itself costs days.

Second, what comes next from CENTCOM. The administration’s available target set near Bandar Abbas is not yet exhausted, and Thursday’s restrike signals that the operational tempo is no longer single-shot. A return to the same axis — IRGC Navy infrastructure, radar, fast-boat moorings — would extend the symmetric pattern. A move against IRGC-linked targets further inland, or against Iranian assets outside Iran, would mark a phase change. Either has to be weighed against the munitions-depletion picture the Pentagon is managing in the background.

Third, what regional hosts say in public. The IRGC framing — that responsibility falls on US allies — is a direct pressure play on the GCC capitals whose bases the US uses. Doha, Manama, Abu Dhabi and Riyadh each have a separate calculus on whether to publicly disavow, quietly tolerate or operationally constrain US strike operations launched from their soil. A single public statement of constraint would change the operating picture.

Fourth, what happens at the strait. The four-ship fire incident is a threshold crossed. The next vessel turned away — or hit — defines whether Thursday morning was an enforcement event or the start of a sustained interdiction.

What we’re tracking but haven’t confirmed

• The identity of the US base the IRGC claims to have struck, and whether CENTCOM acknowledges an impact, intercept or near-miss.
• The munitions used by the IRGC and the launch geography — ballistic, cruise, drone or a mixed salvo.
• The flag and cargo of the four vessels fired upon in Hormuz, and whether any were damaged or detained.
• Any Omani official response to the US presidential threat, and whether the Muscat backchannel is still active in fact.
• Casualty figures on either side from the overnight US strike near Bandar Abbas and the subsequent IRGC action.

This is a rolling story. Times and claims reflect what the parties and primary outlets are saying as of publication; independent confirmation of impact, damage and casualties is pending.