"The issue of Iran's missiles is outside the framework of any form of negotiations," Velayati told reporters in Tehran on Monday.
"The most important feature of missiles is their deterrent power which can help Iran strengthen and adjust its defense system, and it needs no one's permission to this end," he added.
Velayati stressed that Iran will do whatever necessary to attain its defensive goals.
In relevant remarks in August, Iranian President Hassan Rouhani stressed that Iran's military program was based on a defensive doctrine, but meantime said Tehran would never ask for anyone's permission for defending itself and expanding its defense industries, implying that the nation would not discuss its missile program in talks with the world powers.
"Our military doctrine is based on defense and we don’t design any weapon for aggression; we don’t carry out any research on how to occupy the regional states. All our researches are based on this defense principle that how we can defend ourselves or how we can stop the enemy," Rouhani said, addressing a ceremony to unveil two new home-made cruise missiles and two new drones in Tehran participated by Defense Minister Brigadier General Hossein Dehqan and other senior officials.
He said Iran's defense programs were based on a deterrence strategy to prevent the breaking out of war in the region, reiterating that "our military capability is at the service of regional security".
He underscored Iran's strategy of preventing war in the region, and said Tehran is not after an arms race and the Weapons of Mass Destruction (WMDs) "but it doesn’t ask for anyone's permission to defend itself and to develop our defense industries to whatever degree" that we deem necessary.
The President once again reiterated the necessity of a nuclear weapons-free Middle-East, saying that all WMDs in the Middle-East should be dismantled.
Rouhani also stressed Iran's special geopolitical conditions, and asked, "Given Iran's position in the region and the world, is it possible to speak about stability in the region and avoid mentioning Iran? Is it possible to speak of regional welfare and development without naming Iran?"