Tehran’s Islamic Revolutionary Guard Corps (IRGC) claimed on Sunday that two vessels suffered “accidents” in the Strait of Hormuz after ignoring its navigation warnings and attempting to exit the waterway via an “unsafe route” allegedly encouraged by the United States. Two other vessels abandoned the route, according to statements carried by semi-official Iranian agencies. The IRGC asserted that “full control” of the strait lies with its naval forces and that the only safe passage is the officially designated Iranian corridor. No independent confirmation of the incidents was immediately available.

The warning came as Iran suspended its commitments under a Pakistan-brokered Memorandum of Understanding signed in June, which had aimed to end hostilities and establish a long-term peace framework. Iran’s supreme leader, Mojtaba Khamenei, in a message broadcast on state television, declared the accord “worthless and invalid” and threatened “unforgettable lessons” if US strikes persisted. The IRGC further stated that “not a single drop of oil, gas or chemical fertilizer” would transit the strait without coordination and permission, effectively codifying a de facto blockade that mirrors the US naval interdiction reinstated after the ceasefire collapsed.

Washington has not directly addressed the Hormuz incident, but US Central Command confirmed a new wave of airstrikes on Iran late Saturday, describing them as intended to “swiftly punish” the IRGC after two American service members were killed in an Iranian drone and missile attack in Jordan. The US embassy in Amman evacuated Aqaba’s airport and seaport, citing a “specific and credible threat.” Bahrain, which hosts the US Fifth Fleet, reported intercepting an Iranian attack on Sunday. Gulf-based security analysts interpret the sequence as a mutually reinforcing escalation cycle that has extinguished the short-lived ceasefire, with both adversaries now seeking to impose new facts on the strategic waterway through military pressure.

The Strait of Hormuz, a chokepoint for roughly one-fifth of global oil consumption, faces renewed instability. Benchmark crude prices rose sharply following the IRGC’s statement, and shipping insurers have flagged heightened war risks. With Tehran insisting on its own transit regulations and Washington maintaining its naval blockade, diplomats in European capitals assess that the June peace framework is effectively defunct. No active mediation channel is known to be in operation, though Lebanese President Joseph Aoun is scheduled to meet President Trump at the White House this week—potentially creating a forum to discuss de-escalation, even as military postures on both sides show no sign of restraint.