Iran has been a major supplier of military equipment to Russia in recent years, especially since the Kremlin launched its full-scale invasion of Ukraine in 2022, but experts have told RFE/RL that this support no longer plays a key role in Moscow's war effort. Iranian missile sales to Russia, including air defense missiles and ballistic missiles, have totaled $2.7 billion since October 2021, according to a January 12 Bloomberg report citing an unnamed Western security official. The volume of trade is not publicly disclosed by Moscow, and Iran denies…