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http://www.military-today.com/missiles/buk.htm
The Buk (beech) air defense missile system was developed to replace the previous Kub. Its industrial designation is 9K37. Its reporting name in the West is SA-11 or Gadfly. Development of this system commenced in 1972. It was a successor to the Kub-M3. It entered service with the Soviet Army in 1980. The Buk has been exported to a number of countries. After collapse of the Soviet Union a number of air defense systems were passed on to successor states. Currently Russia operates around 350 of these systems. Other operators are Azerbaijan, Belarus, Cyprus, Egypt, Finland, Georgia, India, North Korea, Ukraine, Syria, Vietnam and Venezuela.
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