Ali Shamkhani, Secretary of Iran’s Supreme National Security Council, announced Tuesday that Iran is letting Russia use its infrastructure to fight against terrorism in Syria, IRNA reported.

According to TASS, citing a Russian Defense Ministry report, “Long-range bombers Tupolev-22M3 and frontline bombers Sukhoi-34 took off from the Hamadan air base in Iran carrying the full bomb load to deal a massive air strike against facilities of the terrorist groups Islamic State and Jabhat al-Nusra in Aleppo, Deir ez-Zor and Idlib provinces.”

The bombers destroyed five large armament depots, three command posts and militants’ training camps used by terrorists for operations in Aleppo, the report said.

The report added that Russia’s Sukhoi-30SM and Sukhoi-35 from the Hmeymim base in Syria provided protection, and “all planes coped with their tasks and returned to base.”

This is the first time Russian planes have used an Iranian airfield for the operation in Syria. On all previous occasions Russia’s long-range bombers operated from airfields in Russia, and front-line bombers flew out of Hmeymim in Syria.