Suspected dual-use cargo behind US seizure of Iranian vessel

A US naval operation to seize an Iranian-flagged container ship in the Gulf of Oman was likely driven by suspicions that it was transporting materials considered “dual-use”, according to maritime security sources.

The vessel, Touska, linked to the sanctioned Islamic Republic of Iran Shipping Lines, was intercepted near Iran’s Chabahar coast after what US officials described as repeated failure to comply with warnings. Authorities from United States Central Command said the boarding followed a prolonged standoff and was carried out under expanded enforcement measures targeting shipments to Iran.

Sources familiar with the operation said initial assessments pointed to the presence of cargo that could be used for both civilian industry and military applications. While the exact contents were not disclosed, such materials typically include metals, piping and electronic components — all of which fall under categories monitored by Washington due to their potential role in weapons development.

The Touska had recently travelled from China, making stops at multiple ports including Taicang and Gaolan, before loading additional containers near Malaysia’s Port Klang. It was carrying a full consignment when it entered the Gulf of Oman.

US officials have long accused IRISL of facilitating procurement linked to Iran’s missile programme, a key reason the shipping line has remained under sanctions. The latest interception appears to fall within a broader US effort to enforce a maritime blockade targeting what it deems prohibited or sensitive cargo.

Iran, however, has strongly rejected the justification. Its foreign ministry condemned the seizure as unlawful and demanded the immediate release of the vessel and its crew, warning that such actions risk further escalation. State media, quoting military officials, described the incident as “armed piracy”.

China also voiced concern over the interception, urging all sides to respect existing agreements and avoid actions that could heighten tensions. Meanwhile, Donald Trump defended the move, citing the vessel’s alleged history of sanctions violations and reiterating that US forces were inspecting its cargo.