Russia build drone factory east of Moscow with the help of “Iran”

President Joe Biden’s administration publicly stated in December that it believed Tehran and Moscow were considering standing up a drone assembly line in Russia for the Ukraine war. The new intelligence suggests that the project, in the Yelabuga region of Tatarstan, has moved beyond conception. Iran is providing Russia with materials to build a drone manufacturing plant east of Moscow as the Kremlin looks to lock in a steady supply of weaponry for its ongoing invasion of Ukraine, as of May, Russia had received hundreds of one-way attack drones, as well as drone production-related equipment, from Iran, according to the White House. Why is the United States so concerned with Russian military company ?