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For any country that relies on ballistic missiles as part of its military strategy, launching them is only half the challenge. The other half is ensuring they survive long enough to be used. Fixed missile sites can be identified by satellites, aircraft and reconnaissance drones, making them vulnerable to preemptive strikes before a missile is ever fired.
To address this, Iran has spent decades developing a layered survivability strategy designed to keep its ballistic missile force operational even during sustained attacks. Rather than depending on a single protective measure, the approach combines underground infrastructure, mobility, deception and air defenses to make missile units more difficult to detect, track and destroy.
One of the most visible elements is a network of underground facilities, often referred to as “missile cities”. Built beneath mountains or thick layers of rock, these complexes reportedly store missiles, launch vehicles, fuel and support equipment inside extensive tunnel systems. Housing key assets underground reduces their exposure to surveillance and makes them significantly harder to destroy with conventional airstrikes, often requiring specialized bunker-penetrating munitions.
According to Interesting Engineering, additional protection comes from hardened silos and reinforced tunnel entrances. Thick layers of concrete and earth shield missile storage and launch areas, while fortified entrances are designed to reduce the effects of nearby explosions. Satellite imagery analyzed by independent observers has indicated continued construction and reinforcement at several underground sites, suggesting an ongoing effort to improve their resilience.
Mobility provides another critical layer of defense. Ballistic missiles can be carried by transporter erector-launchers (TELs), heavy vehicles capable of transporting, erecting and launching missiles from multiple locations. Because these launchers can move between underground shelters, prepared firing positions and concealed areas, they are much harder to target than fixed launch sites. Even if intelligence identifies a launcher’s location, it may have relocated before a strike can be carried out.
The strategy also relies heavily on camouflage, concealment and deception. Underground movement limits the time missiles remain visible, while decoy launchers, dummy equipment and false positions can complicate an adversary’s targeting process. By creating uncertainty over which locations contain operational missiles, these measures can force attackers to devote additional surveillance assets or expend precision weapons on targets of little military value.
Completing the defensive network is a layered air-defense system positioned around strategic military facilities. Radar systems, surface-to-air missiles and anti-aircraft weapons are intended to detect and engage hostile aircraft, drones and certain incoming munitions. Even if they cannot intercept every threat, they can increase the complexity of an attack by forcing adversaries to fly more cautiously or dedicate additional resources to suppressing air defenses before striking missile sites.
Taken together, these technologies form a comprehensive survivability architecture rather than a single defensive system. Underground construction protects missile stockpiles, mobile launchers prevent them from becoming fixed targets, deception complicates enemy intelligence, and air defenses add another obstacle for attacking forces. While the effectiveness of individual elements remains difficult to verify publicly, the overall objective is clear: preserve enough of the missile force to maintain a credible retaliatory capability even after a large-scale attack.
