On October 5, the Russian Ministry of Defense announced two of Russia’s Black Sea Fleet submarines, the Veliky Novgorod (B-268) and the Kolpino (B-271), fired ten SS-N-30 Kalibr cruise missiles from a submerged position at ISIS targets near the town of Mayadin in the Deir ez-Zor province. The strike targeted ISIS command posts, ammunition depots, and a large hanger of armored vehicles.