The defence minister of Iran lashed out saying it would advise against “such a stupidity” because nothing would be “left in Saudi Arabia except Mecca and Medina,” the two holy cities.
The war of words came after Saudi Prince Mohammed bin Salman said there was no space for dialogue with rival Iran due to its Shiite ambitions “to control the Islamic world”.
But Iranian defence minister, Hossein Dehghan warned: “If the Saudis do anything ignorant, we will leave no area untouched except Mecca and Medina.
“They think they can do something because they have an air force.”
Saudi Arabia and Iran compete for influence in the Middle East and support rival groups in Syria’s civil war.
Iran denies Saudi accusations that it sends financial and sometimes armed support to groups hostile to Riyadh.
In unusually blunt comments in a nationally-televised interview, Prince Mohammed ruled out any dialogue with Iran and pledged to protect his conservative kingdom from what he called Tehran’s efforts to dominate the Muslim world.
He added: ”We know that we are a main goal for the Iranian regime.
“We will not wait until the battle becomes in Saudi Arabia but we will work to have the battle in Iran rather than in Saudi Arabia.”