Russia Uses Caspian Sea Route to Resupply Iran’s Military Drone Capabilities

The Caspian Sea has become a crucial military supply route for Iran, with Russia transferring drone components to Tehran to help restore its capabilities damaged in conflicts with the US and Israel. This maritime corridor directly connects Russian and Iranian ports, avoiding heavily monitored areas controlled by the US and its allies, making it difficult for the West to disrupt.

Historically, Iran supplied Russia with drones and military equipment through this route for the Ukraine war, but the relationship has now reversed, with Moscow aiding Iran’s rearmament. US sources estimate Iran lost about 60% of its drone inventory during recent fighting, and Russian shipments aim to replenish these losses rapidly.

Key Russian ports involved include Astrakhan, Ulya, and Makhachkala, while Bandar Anzali and Amirabad are the main Iranian hubs. These ports allow ships to bypass the Strait of Hormuz and other Western-controlled sea lanes. The European Union has sanctioned these Iranian ports and Russian shipping companies for facilitating drone and missile transfers to Russia.

Israel has targeted this supply line, notably attacking Bandar Anzali port in March 2024 to disrupt Russian support to Iran. Despite these strikes, shipments reportedly continue, indicating the route remains operational. The Caspian Sea corridor exemplifies the deepening military partnership between Russia and Iran, with Russia now supplying Tehran with drones, satellite intelligence, and other military aid, reversing their earlier roles in the Ukraine conflict.

This evolving dynamic highlights how the Russia-Iran alliance has become a two-way military supply chain, with the Caspian Sea serving as a strategic lifeline for both nations amid ongoing regional and global conflicts.