Secretary of Iran's Supreme National Security Council (SNSC) Rear Admiral Ali Shamkhani underscored the country's missile power, and said military attack against Iran is no more among the enemies' options.

"At present and in the near future, no military threat would be posed to Iran; this doesn’t mean that they (the enemies) don’t want (to threaten Iran) but (means that) they cannot as such a move would incur heavy costs on them and therefore, they have excluded it from their agenda," Shamkhani said after visiting an exhibition of Iran's air defense in Tehran on Sunday.

He underlined Iran's high missile power, and said, "Iran's missile tests and ranges are proportionate to threats, but Iran's missile power has never diverted towards unconventional weapons and this issue cannot and will never go under foreign monitoring and inspection."

Noting that the asymmetric enemies of Iran enjoy highly good air force power, Shamkhani said Iran has also made huge progress in the missile and air defense field to combat the same power.

He emphasized the country's self-reliance and self-sufficiency in building different missiles, and said like the nuclear technology, Iran's missile industry is in pursuit of peaceful purposes through deterrence.

In relevant remarks in October, Lieutenant Commander of Khatam ol-Anbia Air Defense Base Brigadier General Alireza Sabahifard said Iran's outstanding air defense power had, as acknowledged by the entire world, made Iran's sky the most secure one in the world.

"The country's air defense power has grown remarkably in recent years after utilizing new information and monitoring equipment for tracing and identifying flying objects and this power has made the Islamic Republic of Iran's sky the most secure one in the world, as acknowledged by the world states," Sabahifard said in the Central province of Isfahan.

He underscored that the power of the Islamic Republic of Iran in the air defense field was so much that the enemies didn’t even imagine of conducting an aggression against the country.

Also in September, a senior Iranian commander underlined that the country enjoyed such a powerful air defense system now that no enemy flying object could approach the country's border without being noticed and confronted.

"Today, Iran's air defense has the capability to trace and intercept any aggression," Commander of Isfahan province's Air Defense Base General Abazar Jokar said in a press conference.

He also added that the Air Defense force uses powerful home-made defense products and its tracing and defense possibilities and equipment are unique in the world.

Commander of Khatam ol-Anbia Air Defense Base Brigadier General Farzad Esmayeeli announced in September that Iran would unveil and launch several new hi-tech radar and air defense systems with various capabilities, including trace and identification of small flying objects, this year.

"Arash 2 radar system with the capability of discovering small flying objects which is based on the world's state-of-the-art technology is one of the latest achievements" of Iran's air defense, Esmayeeli said in a press conference on the occasion of the Air Defense Day in Iran.

He described indigenization of systems and equipment as a priority for Iran's defense system, and said, "Since last year, 4 systems have become fully operational, which will be unveiled and added to the air defense cycle soon." "One of these systems is a long-range space radar with combined frequencies and the capability of discovering small flying objects and cruise missiles."

Esmayeeli also elaborated on the new defense systems built by the country's specialists, and said, "All Talash 1, 2 and 3 missile systems which enjoy the capability of engagement have been tested and will join the integrated (missile defense) network soon."

Also in August, Sabahifard said, "At present, every part of the Islamic Republic of Iran's airspace is connected to the integrated air defense network and the smallest movements cannot go unnoticed by the eagle eyes of the air defense base".

He underlined the special importance of air defense in the country's defense system, and said, "Before the Islamic Revolution in Iran (1979) air defense was limited to protecting a number of Air Force bases and some important cities, but when the Iraqi-imposed war on Iran (1980-1988) started and the enemy launched comprehensive attacks on all the sensitive and vital centers of the country, Iran's air defense grew on a daily basis to the point that now air defense units have been deployed in more than 3600 sites."

In relevant remarks in April, General Sabahifard said the Iranian air defense force enjoys state-of-the-art detection and interception systems and is monitoring the country's skies 24 hours a day.

"The air defense force is monitoring the country's skies day and night with the help of various state-of-the-art and indigenized radar systems and its integrated watchtower system," he told reporters at the time.

General Sabahifard underlined that the air defense force should pursue its missions with high speed and precision. "Thus, this force is rapidly enhancing its capabilities through its cooperation with the industrial sector and the universities.

Earlier, General Esmayeeli announced that Iran had mounted data gathering and transmission systems on the equipment used by watchmen in its air defense sites.

"The Rassed 32 system is among the good achievements of the (Khatam ol-Anbia) Air Defense Base in surveillance and reconnaissance fields which can send the data pertaining to the direction, altitude and speed of flying targets to the control centers from 15km away," Esmayeeli said.

"Using the achievement, the watchman sends data and information about the direction, speed and altitude of flying targets to the control centers through the system fixed in his helmet or optical systems," he added.

In November 2012, different systems with the capability of intercepting incoming cruise missiles as well as optimized and indigenized air defense missiles were tested in the massive aerial exercises code-named 'Modafe'an-e Aseman-e Velayat 4 (Defenders of Velayat Skies 4)'.

The advanced home-made Ya Zahra air defense missile system was among the systems tested in the wargames.

The air defense weapon is capable of identifying, intercepting and destroying aerial targets, including different types of aircraft, choppers and Unmanned Aerial Vehicles (UAVs).

Ya Zahra is a mobile system and can be linked to the country's integrated air defense network and is capable of engaging and destroying several aerial targets simultaneously and also has a powerful fast reaction and full detection capabilities.

The Iranian officials have always stressed that the country's military and arms programs serve defensive purposes and should not be perceived as a threat to any other country.