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The MiG-31 is one of the fastest known operational combat aircraft in the world as of 2021, with a top speed of around 3,000 kilometres per hour (1,900 mph).It continues to be operated by the Russian Aerospace Forces following the end of the Cold War and the collapse of the Soviet Union in 1991. The other operator, the Kazakh Air Defense Forces, retired the type in 2023.The Russian Defence Ministry expects the MiG-31 to remain in service until at least 2030; that was confirmed in 2020 when an announcement was made to extend the service lifetime of the existing airframes from 2,500 to 3,500 hours.