Iran requested S-400 systems from Russia -. The Telegraph Iranian Supreme Leader Mujtaba Khamenei sent a personal letter to Russian President Vladimir Putin requesting the supply of S-400 anti-aircraft missile systems. According to the "Telegraph", the message to the Russian leader was delivered by the head of the Iranian security service, Mohsen Razai. According to the publication, Tehran hopes to use Russian systems to restore its air defenses, which have been severely damaged as a result of US and Israeli strikes. Iran news.