The Revolutionary Guards said on Saturday that Iran would strike Israel's nuclear facilities if the Jewish state attacked it, state television reported, according to Reuters.
"If the Zionist Regime (Israel) attacks Iran, we will surely strike its nuclear facilities with our missile capabilities," Mohammad Ali Jafari, Guards commander-in-chief, told Iran's Arabic language al-Alam television.
The Revolutionary Guards are the ideologically driven wing of Iran's military with air, sea and land capabilities, and a separate command structure to regular units.
Iranian leaders often dismiss talk of a possible strike by Israel, saying it is not in a position to threaten Iran, the world's fifth-largest oil exporter. They say Iran would respond to any attack by targeting U.S. interests and Israel.
"We are not responsible for this regime and other enemies' foolishness ... If they strike Iran, our answer will be firm and precise," state television quoted Jafari as saying.
The United States, Israel and their Western allies fear that Iran is enriching uranium with the aim of producing nuclear weapons and have not ruled out military action if diplomacy fails to resolve the row.
Iran says it is pursuing only a nuclear power generation programme.