Estonia and other nations which make up NATO's Eastern Flank, along with the alliance as a whole, have a three-year window in which to avoid war with Russia, according to the head of Poland's National Security Bureau (BBN). Other expert estimates from European NATO member states put the time-frame at between five years and a decade.
Those are fair points, but that strategy won’t work if they attack a NATO nation. Even without the support of the US, NATO would wipe the floor with russia.
For real, they haven’t been able to get air superiority against Ukraine despite having many more and more modern planes. They haven’t even been able to get naval superiority against Ukraine who don’t have a navy.
Even discounting the US its absurd to think Russia threatens European NATO with its larger population, vastly bigger economy and much better air and sea forces.