The United States would not be safe from retaliation if Iran is attacked by Washington, the Iran newspaper quoted a senior Revolutionary Guards commander on Tuesday as saying.
In the face of any attack, we will have a crushing response. In that case, we will not only act in the boundaries of the Middle East and the Persian Gulf, no place in America will be safe from our attacks, Massoud Jazayeri was quoted as saying by the daily.
Iran would not strike any country first, he said.
Tehran is locked in a dispute with the West over its nuclear programme.
Israel and the United States have threatened military action against Iran unless it abandons activities which the West suspects are intended to develop nuclear weapons.
Further talks between Iran and world powers are expected to take place this month in an attempt to reach a compromise.
The most recent talks failed in January 2011 after Iran refused to suspend its sensitive uranium enrichment work, as demanded by several U.N. resolutions.
Tehran says its nuclear work is peaceful and it has the right to develop its programme under the nuclear Non-Proliferation Treaty.
America, the Zionists and reactionary Arabs should pay attention that we will seriously confront them wherever the Islamic Republic's interests are threatened, Jazayeri said, according to Iran daily.
Iranian officials have warned that the Islamic Republic's response to any military strike would be painful and has said it could close the oil shipping thoroughfare the Strait of Hormuz.
(Editing by Alison Williams and Angus MacSwan)