Iran has deployed Russian-made S300 air defense missile systems at the country’s Fordo nuclear site, Fars News Agency (FNA) reported.

“The S-300 air defense missile systems are now stationed in Fordo nuclear site,” Commander of Khatam ol-Anbia Air Defense Base Brigadier General Farzad Esmayeeli said on Monday.

He reiterated that the nuclear industry is a national achievement which needs to be protected seriously.

General Esmayeeli said that air defense exercises are practiced only once in non-nuclear sites, adding: “However, in nuclear centers the exercises are conducted several times.”

Fordo is a uranium enrichment facility deep down a mountain and, according to Iranian and western military analysts, cannot be damaged through military operations.

In September 2015, Deputy Head of the Atomic Energy Organization of Iran (AEOI) Asqar Zarea'an disclosed enemies' attempts to carry out sabotage acts at Fordo uranium enrichment plant and Iranian security forces' swift reaction to foil them.

“Recently, a series of electronic boards were discovered that had been planted in certain equipment at Fordo nuclear site to carry out sabotage acts in the enrichment processes,” Zarea'an said in an interview with Iran's Khorassan daily.

He said that the swift action of the Iranian security forces thwarted enemies' plots to paralyze Fordo nuclear site.

Zarea’an said that Fordo nuclear site acts as a backup for Natanz nuclear facility and enemies are attempting to weaken this backup through methods other than military operations.