Sens,
You gave the primary mission of AD. It has to defend Serbia from air attacks.
The fact is that you insist on remaining as unrealistic as when this thread started to become a thread about Allied Force. Of course Serbia’s air defence network could not “defend” agains air attacks by such a ridiculously overmatched foe. It was never designed to do this – it would be stupid to think otherwise – I don’t care what sort of logic you think you’re using. Once we accept this fact we are able to move to the idea of a new primary mission for the AD netword – personally I think UAZ has it down.