The United States has sanctioned 29 entities in China, Turkey and the United Arab Emirates for allegedly helping Iran’s military and proxies buy drone components.

In a notice published in the US Federal Register, the Commerce Department's Bureau of Industry and Security announced Wednesday it had added 26 companies and three Hong Kong addresses to its sanctioned entities list. The designated entities include 19 Chinese companies, nine Turkish companies and one UAE firm. According to the BIS, those firms were facilitating the purchase of American electronic components found in weaponized drones operated by Iran-backed groups, including Yemen’s Houthi rebels and Gaza-based Hamas.

Ten of the listed companies, the bureau said, helped supply parts used in “numerous weaponized unmanned aircraft systems” used by Iranian proxies such as the Houthis. The Yemeni group has launched dozens of drone and missile attacks targeting Red Sea shipping and Israel since the Gaza war began in 2023, actions it says are in solidarity with the Palestinians.

Another five were accused of sourcing American components identified in drones operated by Hamas.