NATO has had weapons on the Russian border for 20 years now

Is that why we’ve seen so many NATO bases in Ukraine clash with the Russian military in the past 2 years? Oh, wait.

There were obviously no plans to “openly attack Russia”

Lol. You are saying this about the empire which, among other things, invaded Iraq, Afghanistan, Libya, Syria just this century, and which has been committing a highly-televised genocide in Palestine.
Oh, and which also had the Russian government be its puppet in the 90s, and where it killed millions of people through legislative means.

Notably, you did not answer my question:
mind telling us how you think Russia should have reacted to the NATO-backed coup in Ukraine in 2014?