The United States moved Thursday to blacklist a group of companies it said covertly helped Lebanon’s Hezbollah acquire components for surveillance drones.

The US Treasury placed sanctions on Beirut-based Stars Group Holding, which it said purchased electronics and other technology via offices in China and Dubai to support Hezbollah’s military operations.

That included the development of unmanned aerial vehicles (UAVs) that the Shiite group had used in support of Syria’s Assad regime against rebels, and were also used recently for surveillance over Israel, the Treasury said. […]