U.S. State Department spokesman Vedant Patel said this on Monday, Ukrinform reports, citing Reuters.
"Our French and British allies publicly offered the assessment that Iran's supply of these UAVs (for) Russia is a violation of UN Security Council resolution 2231. This is something that we agree with," Patel said.
Ukraine has reported a spate of Russian attacks using Iranian-made Shahed-136 drones in recent weeks. Iran denies supplying the drones to Russia, while the Kremlin has not commented.
According to the report, Resolution 2231 endorsed the deal between Iran and Britain, China, France, Germany, Russia and the United States that limited Tehran's uranium enrichment activity, making it harder for Iran to develop nuclear arms while lifting international sanctions.
Under the resolution, a conventional arms embargo on Iran was in place until October 2020. Despite U.S. efforts under former president Donald Trump, who took the United States out of the deal in 2018, to extend the arms embargo, the Security Council rejected this, paving the way for Iran to resume arms exports.
However, Western diplomats said the resolution still includes restrictions on missiles and related technologies that last until October 2023 and that encompass the export and purchase of advanced military systems such as drones.
"It is our belief that these UAVs that are transferred from Iran to Russia and used by Russia in Ukraine are among the weapons that would remain embargoed under 2231," Patel said.
