Missile defense

The Arrow 2 anti-ballistic missile
The Aegis Ballistic Missile Defense System. A RIM-161 Standard Missile 3 anti-ballistic missile is launched from USS Shiloh, a US Navy Ticonderoga-class cruiser.
Phased Array Ballistic Missile Early Warning System at RAF Fylingdales

Missile defense is a system, weapon, or technology involved in the detection, tracking, interception, and also the destruction of attacking missiles. Conceived as a defense against nuclear-armed intercontinental ballistic missiles (ICBMs), its application has broadened to include shorter-ranged non-nuclear tactical and theater missiles.

China, France, India, Iran, Israel, Italy, Russia, Taiwan, the United Kingdom and the United States have all developed such air defense systems.