In the early hours of September 26, 1983, Soviet Lieutenant Colonel Stanislav Petrov, an officer in the Soviet Air Defense Forces, received an alert. Detection systems indicated that several American nuclear missiles were heading towards the Soviet Union. For a few minutes, the world was dangerously close to nuclear war. Fortunately, Petrov suspected this was a mistake and decided not to report the alleged attack. He was right: the satellites had mistaken solar reflections for real launches. The story illustrates a problem that has dogged nuclear powers for decades: detecting a missile is important, so is being able to stop it. But even more important is to have judgment.
That is why countries such as the United States, Russia, Israel and China have invested enormous resources in defense systems capable of intercepting enemy projectiles before they reach their targets. Now India has just taken a decisive step to join that small club. India’s Defense Research and Development Organization (DRDO) announced the completion successfully completed a series of tests of its Ballistic Missile Defense (BMD) system, a multi-layer network designed to intercept long-range missiles, including those capable of carrying nuclear weapons.
The comparison with the famous Israeli Iron Dome is inevitable, but in reality Both systems are designed for very different threats. The Iron Dome was created to destroy short-range rockets, artillery shells and drones. Its mission is to protect cities against relatively slow and close attacks.
The Indian system plays in another league. Their goal is ballistic missiles, weapons capable of traveling thousands of kilometers, reaching speeds greater than Mach 10 and, potentially, carrying nuclear warheads. To understand the difficulty of the challenge, it is worth imagining an extreme situation: trying to hit a bullet by shooting another bullet from hundreds of kilometers away. That is, essentially, what a missile defense system does. When an enemy missile is launched, a network of long-range radars detects it almost immediately. The computers then calculate its future trajectory, predict where it will impact and order the launch of interceptors.
These interceptors do not usually explode near the target. In many cases they destroy it by direct impact, colliding with it at hypersonic speeds. The entire process happens in a matter of minutes. One of the most important features of the new Indian system is that it works in several layers. During recent tests, the interceptors managed to destroy targets both inside the Earth’s atmosphere and outside it. This means that the country has two opportunities to stop an attacking missile.
The first occurs in space, during the intermediate flight phase. If the target overcomes that barrier, a second defensive line within the atmosphere comes into play. It’s a strategy similar to that used by other military powers: if one layer fails, the next tries to complete the job. Can it stop a nuclear attack? The short answer is yes... but with nuances. If a nuclear warhead is mounted on a ballistic missile, intercepting that missile before it reaches its destination neutralizes the threat. However, no system offers absolute protection.
Even the most advanced anti-missile networks in the world have limitations. A massive attack with multiple missiles, electronic decoys, or maneuverable hypersonic vehicles can overwhelm or greatly complicate defenses. For that reason, modern nuclear doctrine continues to be based primarily on deterrence: convincing the adversary that any attack would have unacceptable consequences. Anti-missile shields increase protection, but do not completely eliminate risk.
According to Indian authorities, the tests place the country among the small group of nations with the capacity to intercept very long-range ballistic missiles and even intercontinental threats. It is no small achievement. Develop these systems requires radars capable of observing objects thousands of kilometers away, ultra-fast communication networks and interceptor missiles that must make decisions in fractions of a second.
But the development of Indian technology does not end here. Indian experts are already working on a third phase aimed at facing even more complex threats, such as maneuverable hypersonic vehicles. or missiles equipped with multiple independent warheads (MIRV). These weapons represent one of the biggest challenges for modern defenses because they can change trajectory during flight or release multiple warheads intended for different targets.