Iron Dome Lets Many of the Rockets Fired at Israel Fall. That Is Why It Works.

The footage looks the same every time. Bright streaks climb out of the dark over an Israeli city, bend toward points of light coming the other way, and burst into small orange flashes high above the rooftops.

What the footage never shows is the rockets nobody shot at. In the same salvo, some of the incoming rockets are tracked, judged harmless, and allowed to come down in fields, dunes and the sea, on purpose.

That deliberate restraint is the heart of how Iron Dome works. Here is the whole chain, from the radar that spots a rocket to the warhead that destroys it, plus what the system was never built to stop.

How Does Iron Dome Work?

Iron Dome is a short-range air defense system built by Israel’s Rafael Advanced Defense Systems. Each battery has three parts: a radar that detects and tracks incoming threats, a battle management and control center that decides what to do about them, and launchers loaded with Tamir interceptor missiles.

The key step happens in the computer. It predicts where each incoming rocket will land and fires only at the ones headed for a defended area, such as a town or a power station. Anything heading for open ground is left alone, which saves interceptors for the threats that matter.

From Launch to Interception, Step by Step

1. Detection. The battery’s EL/M-2084 radar, built by Elta Systems, a subsidiary of Israel Aerospace Industries, detects the incoming rocket and keeps tracking it through its flight.

2. Prediction. The radar track goes to the battle management and control center, software built for Rafael by the Israeli firm mPrest. From the rocket’s speed and direction, it calculates the full arc of the flight and the point where it will hit the ground.

3. The decision. If that impact point falls inside a defended zone, the system orders a launch. If it falls in an empty field or the sea, no interceptor is fired. The software makes these calls in split seconds, but, as a 2025 Congressional Research Service report notes, human operators oversee the system and reload the launchers.

4. The intercept. The Tamir interceptor is about 9.8 feet (3 m) long and weighs around 200 pounds (90 kg). It steers with several small fins and closes on the target using electro-optic sensors.

5. The kill. The Tamir does not need to hit the rocket head-on. A proximity fuze detonates its warhead as it passes close by, and Rafael says that blast is designed to set off the rocket’s own warhead in the air.

The launchers do not have to sit next to the radar. They are scattered around the defended area and fired remotely over a secure wireless link.

Why Iron Dome Lets Rockets Fall

Selective engagement is not a weakness Israel tolerates. It is the design idea that makes the whole system affordable, and Rafael lists it as a core feature: by answering only threats headed for defended areas, it “limits the number of interceptor launches, significantly reducing costs.”

The arithmetic is brutal. Rafael does not publish a price for the Tamir, but published estimates run from about $50,000 to $150,000 per interception. The rockets it faces are mostly simple unguided weapons, and they arrive in salvos.

There is also a hard limit on supply. A launcher holds 20 interceptors, and every one fired at a rocket bound for an empty beach is one that cannot be fired at a rocket bound for an apartment block later in the same salvo.

The batteries are also mobile. Israel can move them as threats change, putting interceptors where the rockets are actually being aimed.

What Iron Dome Can and Cannot Stop

Iron Dome was built for short-range rockets, artillery shells and mortar rounds, and its intercept range is 2.5 to 43 miles (4 to 70 km). Rafael now markets it against drones and cruise missiles as well.

The system belongs to the Israeli Air Force, the same service that flies the jets in our guide to Israeli fighter jets, and it has operated Iron Dome since 2011.

What it was not designed for is a long-range ballistic missile from Iran. Those come in far higher and faster, which is why Israel runs a layered network in which Iron Dome is only the bottom floor.

Layer	System	Main job
Short range	Iron Dome	Rockets, artillery, mortars, drones, cruise missiles
Low to medium range	David’s Sling	Heavier rockets, cruise missiles, shorter-range ballistic missiles
Upper atmosphere	Arrow 2	Ballistic missiles
Above the atmosphere	Arrow 3	Long-range ballistic missiles, in space

The 2026 war with Iran tested that structure hard. After the United States and Israel struck Iran on February 28, 2026, Iran fired more than 400 missiles and hundreds of drones at Israel in the first four weeks, according to The Jerusalem Post.

In mid-March, US officials told Semafor that Israel was running critically low on ballistic missile interceptors, a claim Israel’s foreign minister denied. Either way, the shortage being discussed was in the upper layers, not Iron Dome.

The Jerusalem Post reported that Israel began conserving its top-tier interceptors and leaning on upgraded David’s Sling and Iron Dome batteries adapted to engage drones and longer-range projectiles. Direct hits in Dimona and Arad followed interception attempts with those lower-tier systems that failed. A conditional ceasefire took effect on April 8.

The Myths vs. the Reality

The success rate is not what most people think. Rafael claims more than 10,000 interceptions and a success rate above 90%. That figure measures the rockets Iron Dome chose to engage, not every rocket fired, because the ones heading for open ground were never targets in the first place.

The rate has also moved over time. Figures published in the system’s first year ranged from 75% to 85%, and the later 90% figures rest largely on IDF and Rafael data rather than independent audits.

“Iron Dome for America” was never Iron Dome. On January 27, 2025, President Trump signed Executive Order 14186, titled “The Iron Dome for America”, calling for a homeland shield against ballistic, hypersonic and cruise missiles. The Pentagon renamed it “Golden Dome for America” on February 24, 2025.

The name was borrowed, but the job is completely different. Experts quoted by Military Times agreed Iron Dome would be ill-suited to defending a territory the size of the continental United States, since it was designed as the lowest layer of defense for a small country.

Who Pays for Iron Dome, and Who Else Uses It

Israel developed Iron Dome alone, but the United States has helped pay for it since 2011. The Congressional Research Service puts the total at more than $6 billion for batteries, interceptors, co-production and maintenance.

That money bought a share of the work. Under a 2014 co-production agreement, RTX (formerly Raytheon) builds Tamir components in Tucson, Arizona, and the US version of the interceptor is called SkyHunter. By 2023, the US workshare had reached 30%.

The system has also served in American hands. Here is how Iron Dome went from a 2007 decision to a weapon fielded by two countries.

The Marine Corps version, the Medium-Range Intercept Capability, mounts Tamir-family interceptors on trailers and is aimed at cruise missiles and drones in the Western Pacific. Drones are now a growing share of what air defenses face, and our ranking of the best military drones in the world shows how capable the larger ones have become.

The laser is meant to ease the cost problem. Iron Beam targets smaller threats at a marginal cost per shot, but it works poorly in heavy cloud, so it supplements Iron Dome rather than replacing it.

Next time you see those streaks climbing over a city at night, count the incoming lights that get no answer. Those unanswered rockets are not the system failing. They are Iron Dome doing the math it was built to do, and keeping its last interceptors for the rockets headed for people.