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The United States has carried out fresh air and naval strikes in southern Iran, targeting missile facilities and boats allegedly preparing to deploy mines, in what Washington described as a “self-defence” operation amid rising regional tensions.

The US Central Command (CENTCOM) said the strikes were intended “to protect our troops from threats posed by Iranian forces,” adding that American forces continue to operate under a ceasefire framework while maintaining “restraint.”

According to CENTCOM, the latest operations focused on areas near Bandar Abbas, a strategic port city close to the Strait of Hormuz and home to key Iranian naval installations.

Iranian state media reported that explosions were heard in the area and that local authorities had launched investigations, though the extent of damage remains unclear.

In a separate development, Iran’s Islamic Revolutionary Guard Corps (IRGC) claimed it had shot down a US drone and engaged additional American aircraft that entered Iranian airspace, although it did not specify when the incidents occurred. The IRGC also said Iran reserves the “legitimate and definite” right to respond to any ceasefire violations.

The escalation comes as diplomatic efforts continue behind the scenes. US Secretary of State Marco Rubio said negotiations with Iran remain possible, noting ongoing discussions involving Iranian and Qatari officials.

Rubio said President Donald Trump had expressed a desire to reach an agreement but warned that any deal would depend on firm terms, particularly regarding maritime security in the Strait of Hormuz.

Tensions have also been heightened by statements from Iranian Supreme Leader Mojtaba Khamenei, who warned that the Middle East would “no longer serve as shields for US bases,” signalling continued defiance toward Washington’s military presence in the region.

The latest strikes come amid a fragile ceasefire observed since April, following months of escalating conflict that has disrupted global oil markets and intensified insecurity across the Gulf region.

While diplomatic talks reportedly continue on a possible ceasefire extension and nuclear-related agreements, both sides remain divided on key issues, including sanctions relief, uranium enrichment limits, and control of strategic waterways.