The Buk is a family of self-propelled, medium-range surface-to-air missile systems developed by the Soviet Union and its successor state, the Russian Federation, and designed to counter cruise missiles, smart bombs, fixed- and rotary-wing aircraft, and unmanned aerial vehicles. In the Russian A2AD network, Buk is located between the S-200/300/400 systems above and the point defense Tor and Pantsir type systems below.

The Tor is an all-weather, low-to medium-altitude, short-range surface-to-air missile system designed for destroying airplanes, helicopters, cruise missiles, unmanned aerial vehicles and short-range ballistic threats (anti-munitions). Originally developed by the Soviet Union under the GRAU designation 9K330 Tor, the system is commonly known by its NATO reporting name, SA-15 "Gauntlet". A navalized variant was developed under the name 3K95 "Kinzhal", also known as the SA-N-9 "Gauntlet". Tor was designed to shoot down guided weapons like the AGM-86 ALCM and BGM-34 day and night, in bad weather and jamming situations. Tor can detect targets while on the move. The vehicle must stop intermittently when firing, although trials have been conducted with the goal of eliminating this restriction.