The Patriot (Phased Array Tracking Radar to Intercept on Target) is a ground-based air and missile defense system manufactured by Raytheon (now RTX) and operated by the U.S. Army and numerous allied militaries. A complete battery typically includes a phased-array radar set, an engagement control station, launching stations, and interceptor missiles, all mounted on trucks or trailers for mobility.
The system entered U.S. Army service in 1984, replacing older Nike Hercules and HAWK systems in the high-to-medium altitude air defense role. It first drew global attention during the 1991 Gulf War, when Patriot batteries were deployed to intercept Iraqi Scud missiles fired at Saudi Arabia and Israel. Postwar analyses, including a 1992 U.S. General Accounting Office report, concluded that the system's actual intercept performance against Scuds was considerably lower than initial wartime claims, prompting significant upgrades.
Subsequent variants improved capability substantially. The PAC-2 introduced a blast-fragmentation warhead optimized against ballistic targets, while PAC-3, fielded in the early 2000s, uses a smaller hit-to-kill interceptor built by Lockheed Martin that destroys targets by direct collision. The PAC-3 MSE (Missile Segment Enhancement) extended range and altitude further.
Patriot has been exported to a wide range of states, including Germany, the Netherlands, Greece, Spain, Israel, Japan, South Korea, Taiwan, Saudi Arabia, the UAE, Kuwait, Qatar, Poland, Romania, Sweden, and others. In 2022–2023, the United States and European allies began transferring Patriot batteries to Ukraine to defend against Russian missile and drone strikes; Ukrainian crews reported intercepts of cruise missiles, ballistic missiles, and Kh-47 Kinzhal air-launched missiles.
In arms-control and alliance politics, Patriot deployments are often treated as a tangible signal of U.S. security commitment. Decisions to base, withdraw, or sell Patriot units regularly feature in NATO burden-sharing debates, Gulf security arrangements, and East Asian deterrence discussions.
Example
In April 2023, Ukraine's air force reported that a Patriot battery had intercepted a Russian Kh-47 Kinzhal missile over Kyiv, the first publicly confirmed combat shootdown of that weapon.
Frequently asked questions
Patriot intercepts targets at lower altitudes (endo-atmospheric) and shorter ranges. THAAD engages ballistic missiles in their terminal phase at higher altitudes, and Aegis is a ship- or shore-based system with the SM-3 family that can reach exo-atmospheric targets.
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