Oman summoned the Iranian ambassador on Sunday and delivered a formal protest note after drone strikes hit sites in the Musandam and Al Wusta governorates, according to the Omani foreign ministry. The undersecretary for administrative and financial affairs, Sheikh Khalid bin Hashil al-Muslahi, handed the note to Ambassador Musa Farhang and expressed the sultanate’s dissatisfaction with what it called “irresponsible actions,” the ministry said in a statement.

The Omani demarche insisted that Iran must respect state sovereignty, good neighbourliness, non-interference in internal affairs, and the ethical values governing bilateral ties. Iran’s Islamic Revolutionary Guard Corps had earlier announced it had struck “logistical support centres and fuelling platforms” used by US aircraft carriers at the port of Duqm in Al Wusta. Iranian state-linked media circulated the IRGC statement, which framed the raid as retaliation for a US ceasefire violation and aggression against Iranian territory, though the statement did not acknowledge any strikes on Musandam.

The incident drew swift condemnation from the Arab League, which issued a statement expressing “categorical rejection and strong condemnation of the continued Iranian attacks” that also hit Qatar, Kuwait, the UAE, Bahrain and Jordan, according to the pan-Arab body. The United Arab Emirates separately confirmed intercepting a number of missiles and drones. The US embassy in Muscat issued a security alert urging American citizens in Duqm, its surrounding areas, and Musandam governorate to stay indoors, citing recent security activity without specifying the nature of the threat.

Viewed from Gulf capitals, the strikes represent a dangerous expansion of the US-Iranian military exchange beyond direct battlefields, with fragments falling on multiple Gulf Cooperation Council states simultaneously. Oman, long a trusted intermediary between Tehran and Western powers, now found its own territory hit, prompting an unusually sharp public rebuke. Analysts in London note that Iran’s parallel announcement of closing the Strait of Hormuz, if enacted, would threaten a chokepoint for roughly a fifth of global oil flows, compounding the disruptions from the weekend’s salvoes. As the Omani protest note called for a return to the principles of sovereignty, no official Iranian response had been issued, and EU diplomats warned that the crisis risked eviscerating any remaining diplomatic track. The dossier is expected to be raised at emergency UN Security Council consultations in the coming days.