The S-300VM "Antey-2500" is a Russian anti-ballistic missile system. The system is designed to target short- and medium-range ballistic missiles, aeroballistic missiles, cruise missiles, fixed-wing aircraft, loitering ECM platforms, and precision-guided munitions.

An anti-ballistic missile (ABM) is a surface-to-air missile designed to counter ballistic missiles. Ballistic missiles are used to deliver nuclear, chemical, biological, or conventional warheads in a ballistic flight trajectory. The term "anti-ballistic missile" is a generic term for a system designed to intercept and destroy any type of ballistic threat; however, it is commonly used for systems specifically designed to counter intercontinental ballistic missiles (ICBMs).