Ukraine

We know production numbers to a rough degree, there's only so many airfields and flight crews that can fly and service them so we wait and count. If the production number doesn't match the distribution then you know they weren't somewhere. If we watch flight radar from China to Russia we can see them come and go regardless of how stealth they are so long as they must follow commercial flight paths for the most part.

lol nowhere close. We have A/B/C variants for different branches, including things like beefed up landing gear for the Navy carrier jets and VTOL for the jarheads.

Russia can’t sail its flagship carrier for more than a week without it catching fire and needing a tow home.

At present I think the bigger threat is cheeto in charge pulling carrier groups away from Taiwan and letting China invade