Admiral Beez
Major
Up until the MiG-21 and Su-17 the USSR always had a sizable force of single-engine, single-seat supersonic strike-fighter aircraft. However as the USAF began introducing the single-engine, single-seat F-16 the USSR began moving away from the single-engine format and more emulating the twin-engined F-15 with their MiG-29 and Su-27. Why didn't the USSR make their own single-engined F-16 equivalent? Was it because the Soviets did not have a sufficiently powerful and reliable engine?