The Sukhoi 27 (Su-27 - NATO designation: Flanker) is a Russian single-seater fighter aircraft designed by the Sukhoi Design Bureau (SDB) under Pavel Sukhoi. The aircraft is currently in service with the airforces of the CIS, China (as the J-11), Syria, and Vietnam. India has also received a variant of Su-27s, designated Su-30MKI's (Flanker-C). The export cost is around $35 million per aircraft, or $70 million on a ten-year supported lease.