The Guardian Middle East
leftLIVE UPDATECost of US war on Iran mounting – as it happened

Live BriefGenerated 13h ago
Story Developing — Brief Reflects Events Through 13h ago
What Happened
A senior Islamic Revolutionary Guard Corps (IRGC) Navy officer stated that Iran has expanded its operational definition of the Strait of Hormuz into a "vast operational area" significantly wider than its pre-war boundaries. The IRGC now views the strait not as a narrow waterway around a handful of islands but as a greatly enlarged zone of military significance. Separately, US Defense Secretary Pete Hegseth appeared before the House of Representatives to face questioning on Iran war expenditure and military operations, while backing President Trump's proposed $1.5 trillion defense budget and describing the US as being on a "sacred mission."
Key Actors
- ·IRGC Navy(Naval branch of Iran's Islamic Revolutionary Guard Corps)Announced an expanded operational definition of the Strait of Hormuz, redefining it as a vast area beyond its traditional narrow geographic boundaries.
- ·Pete Hegseth(US Secretary of Defense)Testified before the House of Representatives on Iran war expenditure and military operations while endorsing Trump's $1.5 trillion defense budget proposal.
- ·Donald Trump(President of the United States)Proposed a $1.5 trillion defense budget, which Hegseth characterized as part of a "sacred mission."
Why It Matters
The IRGC's redefinition of the Strait of Hormuz—through which roughly 21% of global petroleum passes—signals Iran's intent to assert broader maritime control in the Persian Gulf and potentially expand the geographic scope of any future confrontation with US forces. This doctrinal shift comes as the US Congress scrutinizes expenditures related to ongoing military operations against Iran, suggesting both sides are preparing for a protracted or escalated conflict. The strait's status has long been a flashpoint; Iran's claim to a "vast operational area" could justify interdiction or military action far beyond the traditional 21-mile-wide chokepoint, complicating US and allied freedom-of-navigation operations.
Watch For
Monitor whether the IRGC provides specific geographic coordinates or maps defining the new "operational area," which would clarify the scope of Iran's claimed maritime jurisdiction. Watch for US Fifth Fleet or CENTCOM responses, including potential freedom-of-navigation operations to contest the expanded Iranian claim. Track the House Armed Services Committee hearings for details on current US force posture in the Gulf, rules of engagement, and any disclosed timelines for military operations or drawdowns. Any Iranian naval exercises or deployments in the newly defined zone will test whether this is rhetorical posturing or operational doctrine.
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