I know theres a lot of "it was the joos!" Out there but hear me out. This one lines up nicely.
Background - Russia has long propped up the Iranian regime as a counter to US/Israel in the region.
Premise - Israel had to neutralize Russias long range strike capabilities before risking a war on Iran.
Tactics - both attacks used infiltration and local drone assembly/attacks. Both totally novel and never seen before in close succession. Timng and tactics indicate the same origin.
Outcome - remaining capabilities moved to far east. Southbound ordinance would have to cross China, which is diplomatically touchy. Reduces but doesn't remove threat to Ukraine.
QED
I highly doubt they're in Kamchatka.
Why? Close to strike US.
Vladivostok is too antagonistic to China and North Korea imo. Nice place though, one of my favorites in Russia.
Perhaps a plane or two is there. The entire fleet isn't.
Furthermore, moving them further from Ukraine wouldn't even mitigate against the tactic that was used to attack the bases in the first place.
Belaya airbase is 4,000 kilometers from Ukraine and was the hardest hit.