Foreign Minister Manouchehr Mottaki said on Friday that Iran's response to US and Israeli probable attack would be "crushing".
Talking to IRNA, he stressed that neither Washington nor Tel Aviv is in a situation to create new crisis for themselves.
"The Zionist regime is still involved in aftershock of the Lebanese war, and the US has no capacity to enter another crisis in the Persian Gulf", he added.
As to 1980-88 Iraqi imposed war against Iran, Mottaki denounced the support of the global arrogance, particularly the US for the Iraqi dictator.
The imposed war was aimed at destroying Iran's military facilities and equipment, he said, adding that they, unwillingly, made the Iranian military industry self-sufficient.
Iranian people, from all walks of life, are ready to defend the country's sovereignty and territorial integrity, Mottaki said.
As to test-fire of Shahab-3 missile during a naval wargame, he said the exercise was aimed at displaying Iran's combat readiness and military potentials.
The 1,000-kg Shahab-3 missile was test-fired on the third day of a war game launched by naval and missile sections of the Islamic Revolutionary Guards Corps dubbed 'Payambar-e A'zam III' (the Great Prophet III) on Wednesday.
The 2,000-km-range Shahab-3 missiles were tested to demonstrate Iran's capability in hitting its enemies accurately at the early stages of their probable attacks against the Islamic Republic.
Domestic and foreign political and military analysts believe that Shahab-3 is able to reach targets in the occupied lands in case of Israeli may-be attack on Iran's nuclear sites.