Iran has escalated its rhetoric regarding the Strait of Hormuz, declaring the waterway an inviolable "red line" and warning that any US military strike on its infrastructure would trigger retaliatory attacks on American assets.
The statement, issued on Thursday, marks a hardening of Tehran's position as diplomatic efforts to secure a nuclear deal stall and tensions with Washington intensify.
The threat directly challenges US President Donald Trump's recent assertions that Iran is prepared to sign a diplomatic agreement.
By framing the Strait as a non-negotiable security boundary, Iranian officials are signaling that military coercion will not yield to US demands, potentially closing the door on near-term de-escalation.
This stance follows previous warnings from the Iranian Army that the Strait would not be reopened through military force, underscoring a coordinated hardline posture.
For global markets, the implications are immediate.
The Strait of Hormuz remains the world's most critical oil transit chokepoint, handling roughly one-fifth of global oil consumption.