If there's an existential threat to Russia, it's not military, and for the same reason. They have over 5,000 nuclear warheads too. Nobody is invading them. They know that. They are still showing off bigger, scarier missiles.

They won't go pay an exponentially higher price by invading a nuclear state, which, thanks to NATO, is what they'd be doing invading Poland. It's strange to think there's not a substantial difference between invading a non-NATO, non-nuclear state and one that is.