You are posing a big "what if" and then presuming an outcome. What if Estonia? Well, it's TBD, but we can guess Russia will NOT do that since clearly their hands are full with losing in Ukraine. They aren't bullying anyone, the US and Europe have pretty artfully sidestepped Putin's line in the sand of not sending troops. It makes sense for the US to not send American troops to die in a war we don't belong in. That isn't being bullied, that is simply good policy.
What exactly are "we" giving Russia other that a 6 month war they expected to be a 3 day war just like Crimea? IMO, "we" is the world.