The Sukhoi Su-30MKK (NATO reporting name: Flanker-G) is a modification of the Su-30, incorporating advanced technology from the Su-27M variant. Su-30MKK was developed by Sukhoi Company (JSC) in 1997, as a result of a direct Request for Tender between the Russian Federation and the People's Republic of China. It is a heavy class, all-weather, long-range strike fighter, and like the Su-30, comparable to the American F-15E Strike Eagle. Su-30MK2 is a further improvement to Su-30MKK with upgraded avionics and maritime strike capabilities. The MKK and MK2 are currently operated by the People's Liberation Army Air Force, Indonesian Air Force, Vietnam People's Air Force, Venezuelan Air Force and the Uganda People's Defence Force.