The US has sanctioned 10 companies linked to Iran's arms supply chain, according to the US Treasury. The firms are based in China, Hong Kong, Pakistan, Saudi Arabia, and Turkey. The sanctions target entities allegedly involved in supplying components for Iranian military equipment.

The Treasury stated that the measures block all assets of the sanctioned individuals and organizations within the US and prohibit transactions with the listed companies. The move expands US economic pressure on Iran by targeting intermediaries rather than just the country itself.

This follows ongoing US efforts to limit Iran's access to weapons and military technology. The sanctions are part of broader measures aimed at curbing Iran's regional influence. The US has previously imposed direct sanctions on Iran, but this marks a shift toward targeting third-party suppliers.

The action comes amid heightened tensions between the US and Iran over nuclear programs and regional conflicts. The US has accused Iran of supporting militant groups and violating international agreements. The new sanctions are seen as a way to disrupt Iran's ability to acquire advanced weaponry.

The move also reflects growing US concerns about the role of non-state actors in global arms trade. By targeting firms in key regions, the US aims to cut off financial and logistical support for Iran's military activities. The sanctions are expected to increase pressure on Iran's allies and partners.