This is a video of an in-flight demonstration flown by
the new Russian SU-30MK fighter aircraft. Pretty amazing stuff.
The SU-30MK is doing a pretty impressive series of maneuvers ... If you want a reference as to what the aircraft is doing, watch the smoke!
The fighter can stall from high speed, stopping in less than a second. Then it demonstrates an ability to descend tail first without causing a compressor stall. It can also recover from a flat spin in less than a minute. These capabilities probably don't exist in any other aircraft in the world today.