The US Ambassador to the United Nations has expressed concern over the use of Iranian unmanned aerial vehicles (UAVs) by Russia in Ukraine.

In a briefing on Tuesday, Linda Thomas-Greenfield stated that it is a “direct violation of UN Resolution 2231”. She revealed that Washington has requested the United Nations conduct an investigation into the matter.

In a statement to Iran International, Ambassador Thomas-Greenfield emphasized the significance of the investigation, highlighting that any other instances of Iranian UAVs being used elsewhere should also be condemned as it constitutes a violation of Resolution 2231.

In June, Iran International wrote of the US government disclosures that Russia, with the assistance of the Islamic Republic, is in the process of establishing a UAV production center approximately 960 kilometers east of Moscow. If completed, the factory is expected to significantly alter the dynamics of the war in Ukraine.

According to analysts from the US Defense Intelligence Agency, the establishment of this factory will substantially increase Russia's stockpile of UAVs compared to the previous supplies received from Iran.

As per the analysis conducted by the US Defense Intelligence Agency, Russia has received a total of 400 Shahed-131 and 136, and Mohajer drones from Iran, depleting Iran's stockpile completely.

While Iranian officials, including Ali Khamenei, have denied supplying arms to Russia for use in the Ukrainian conflict, John Kirby, the spokesman for the National Security Council of the White House, made an announcement in early-June that Russia had acquired hundreds of new drones from Iran.

Kirby reiterated that Iran has also facilitated the establishment of the UAV factory in Russia, enabling them to produce Iranian UAVs as early as next year.