2K11 Krug
The 2K11 Krug (Russian: 2К11 «Круг»; English: circle) is a Soviet and now Russian long-range, medium-to-high altitude surface-to-air missile (SAM) system. "2K11" is its GRAU designation, while SA-4 Ganef is its NATO reporting name. The system was designed by NPO Novator and produced by Kalinin Machine Building Plant.
Read more about 2K11 Krug: Development and Service, Structure of Krug Missile System