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Right, time to use logic people. The image is too blurry to reveal the shape of the object. So let us think what happens when a fighter jet is hit by a missile. We have pictorial examples of MIG-21.
Next, let's look at the type of fire raging on the object. This is a constantly fed flame, where fuel is constantly burning because heat and oxygen are available. If this had been a direct missile strike, then given the size of the flame, this craft would have exploded into bits. This shows that either a proximity fuse caused limited damage, or an engine failure, or the remotest possibility that this was a gun kill, but please don't quite me on the last one. Most probably, this was a heat seeker that exploded in the proximity of the engine, causing limited puncturing, leading to fuel leaking out from high pressure consistently, thus creating the flame.
The picture easily fits a Mg-21 hit from the side, aft of the wings, with the front section detaching from the rest. The angle is consistent with a craft whose pieces we expect to fall in a forward motion, leaving behind a track, just like the Mig-21.
Of course I could be very wrong in all of this so I encourage refutations based on solid logic and evidences.