The northern route, the main supply route across the Caspian Sea, along which ammunition and drones flowed to the Russian side of the Ukrainian front and now back to Iran, is no longer safe. Israel has found a weak point in the Russian-Iranian alliance, the port of Bandar Anzali, and struck. The Caspian has ceased to be an oasis of peace, and Moscow feels increasingly drawn into another war. This time, an Iranian one.