At its core, the Su-30 represents a powerful evolution of the original Su-27 Flanker. It improves on the original's operational range and carries with it a refined air-to-air / air-to-surface all-weather attack quality. In this way, the same platform can be used to undertake both air space denial and ground strike missions as needed as it has a broadened support for various munitions types and its onboard systems can support both air and ground attacks. The general form and function of the Su-27 are retained but the mission set of the Su-30 is expanded considerably. (Courtesy of www.militaryfactory.com/aircraft/detail.asp?aircraft_id=698)