Russian officials trained in Iran in recent weeks as part of an agreement on the transfer of drones between the two countries, the U.S. State Department said on Thursday.
U.S. officials said last month that Washington had information that Iran was preparing to provide Russia with up to several hundred drones, including some that are weapons capable, and that Russian officials had visited Iran to view attack-capable unmanned aerial vehicles (UAVs).
The claim raised concerns that Iran, which has supplied drones to its allies in the Middle East, was now giving support to Russia for its war in Ukraine.
Iran's foreign minister at the time denied the claim, including in a phone call with his Ukrainian counterpart.
