Iron Dome vs S-400 vs Patriot vs THAAD: Missile Defense Systems Compared

Missile Defense Systems Compared: 2026 Guide

With Iran launching thousands of missiles and drones, air defense has never been more relevant. Here's how the world's top systems compare.

Quick Comparison

Israel's Layered Defense — The Gold Standard

Israel operates the world's only multi-layered missile defense:

Layer 1: Iron Dome — see Iron Dome vs S-400

• Intercepts short-range rockets (4-70 km)
• 90%+ success rate against Hamas/Hezbollah rockets
• AI-based threat assessment (ignores rockets heading for empty areas)

Layer 2: David's Sling

• Intercepts cruise missiles and large rockets (40-300 km)
• Fills the gap between Iron Dome and Arrow
• Used against Iranian cruise missiles

Layer 3: Arrow 2/3

• Intercepts ballistic missiles outside the atmosphere
• Arrow 3 can intercept in space (exo-atmospheric)
• First operational space-interceptor system

US Systems

Patriot PAC-3 MSE — see Patriot vs S-300

• Hit-to-kill interceptor (no warhead, pure kinetic energy)
• Combat-proven against ballistic missiles in Ukraine and Middle East
• NATO standard air defense

THAAD (Terminal High Altitude Area Defense)

• Intercepts ballistic missiles in terminal phase
• Higher altitude than Patriot (150 km)
• Deployed to protect US bases and allies
• Never used in actual combat against ballistic missiles

Russian Systems

S-400 Triumf

• Longest range (400 km claimed)
• Sold to China, India, Turkey
• Unproven against stealth aircraft or peer adversary
• Theoretical specs may exceed actual performance

S-300PMU-2

• Iran's primary long-range air defense
• Failed to prevent Israeli strikes in Syria
• Operator skill matters as much as hardware

Key Takeaways

• Israel has the most proven defense with 10,000+ real interceptions
• US Patriot is the most combat-proven long-range system
• Russian S-400 has impressive specs but lacks combat validation against peers
• No single system is enough — layered defense is essential
• Mass salvos can overwhelm any defense — Iran's 3,000+ missile strategy is designed to saturate

Conclusion

Israel's layered approach (Iron Dome + David's Sling + Arrow) is the model the world is following. No defense is perfect against thousands of simultaneous missiles, but these systems dramatically reduce the damage from missile attacks.

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This article is for informational and educational purposes only. System capabilities are based on publicly available data and may not reflect classified performance.