Iranian President Hassan Rouhani sits among senior army staff as he delivers his speech during the annual military parade on Sept. 22, 2017 in Tehran. Rouhani vowed that Iran would boost its ballistic missile capabilities despite criticism from the United States. (AFP Photo)

TEHRAN, Oct. 9 (Xinhua) -- Iran's Foreign Ministry said Monday if the U.S. blacklists Iran Islamic Revolution Guards Corps (IRGC) as a terror group, Iran would give a "firm and crushing" response, Tasnim news agency reported.

Spokesman Bahram Qasemi said "I hope that the U.S. ruling body would not make the strategic mistake, but if it does so, then Iran's response will be firm, decisive and crushing and the U.S. should accept its consequences."

He also hoped the wise people among the U.S. statesmen would take steps to prevent the sanctions.

On Sunday, the IRGC commander also noted that if Washington decides to designate the IRGC as a terrorist organization, the IRGC will in turn treat the U.S. Army around the world, particularly in the Middle East, as the forces of the Islamic State militants.

The U.S. administration has imposed several rounds of sanctions against Iran over the past months claiming that Iran has not observed the spirit of the nuclear deal Oswald two years ago.

Washington says that Iran's missile program, mainly conducted by the IRGC, is threatening the regional and international peace.

Iran denies the allegations stressing that it's missile program is only for deterrent purposes.