India, June 23 -- Iran has issued threats to US bases in the Middle East after air strikes targeted Tehran's nuclear sites on Sunday.

Ali Akbar Velayati, an advisor to Iran's supreme leader Ayatollah Ali Khamenei, said that bases used by the American forces could be attacked in retaliation to the US strikes.

"Any country in the region or elsewhere that is used by American forces to strike Iran will be considered a legitimate target for our armed forces," Velayati said according to IRNA news agency.

"America has attacked the heart of the Islamic world and must await irreparable consequences," he added.

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