If that does not happen, these sabers will be rattling from time to time. If Russia's (and China's) immediate borders are packed with countries armed to their teeth, there would be wars.
Buffer states happen for a reason.
I believe USA kind of understands this (see how they reacted to Cuba) and EU surely understands this too (see how Sweden reacts to any signs of Russian militarization), but they have trouble projecting it on other countries or still believing they can coerce these countries into "dealing with it".