Similar to the Mig 23, the Mikoyan MiG-27 Flogger-D/J is a variable-geometry ground-attack aircraft, originally built by the Mikoyan-Gurevich design bureau in the Soviet Union and later license-produced in India by Hindustan Aeronautics as the Bahadur "Valiant". It is based on the MiG-23 fighter, but it was optimized for air-to-ground attack. The MiG-27 was not widely used outside Russia, but it still remains in service with the Indian, Kazakh and Sri Lankan Air Forces.