Accordiug to some on this forum, Russia has full air superiority so this could not have happened.
Air superiority nor air supremacy. So random attacks like this can still occur. And it’s possible these SU 27s are from Poland or other NATO stocks and flew from outside Ukraine.
BTW if I were Ukrakne I would attack Sevastopol.
Orc VKS changing tactics because the UA has many more anti-air missiles: troops saturated with them, so VKS support going down fast. VKS/VVS helicopters are lobbing unguided missiles as far as they can to avoid anti-air missiles, so there are very poor results. Same with aircraft. Waning efforts.
However, if UA launches offensive, Orcs will do what they must - even if means heavy losses of aircraft and helicopters.