as far as i heard. It's "nearer" to Sevastopol. and they can set Neptun or surveillance battery there, so they can have Extended Horizon.
Problem with this is that considering the size of the island, if Russia decided to level them with Kalibr or KH-101's. anything placed there won't have place to run to. Also Ukraine should already have good range to Sevastopol already from Odessa.
and Problem for occupying Russian forces there are that it's very close to the coast with only surprisingly 40 km distance, from the center of the island. This allows massed strike of something small like Switchblade UAV's. a decapitation strike to take out communications and something like Tor. Which then can be followed by TB-2's and such.
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The best protection is obviously having air patrol or warship nearby. However if the initial attacks were done by Switchblades, then there could probably nothing can be done yet. As such drones are visually small and the RCS are small, probably below 0.1 sqm's which at least Tor-M1 system unable to search.
The VKS Response will be in minutes after the attacks, depending on how many aircrafts being sortied at least 10 mins to 20 (20 mins if 12 being sortied).
If the Russian MOD release on the attacks are correct, then it's yes VKS sortied in and picked whatever Ukrainian forces land there. and picked the drone.