There's essentially nothing you can do to deter this sort of behavior short of starting a war
"We don't want to start a war doncha know, so whenever Russia attacks us we'll just take it on the chin and not fight back too hard".
It appears the world has forgotten the lessons of the Sudetenland.
Look if russia wants to conquer the world, let them. They can't make things worse than the indolent ivy-league rot that has destroyed western culture. If people braying about the threat of the east want to be taken seriously, they need to make a much more concerted effort to convince us that the western model makes sense and we're not just working our asses off to suck off rich retards
Do you have any experience living under Russian rule? Have you tried any political participation while doing so?
But since Russia IS locked in a land war with Ukraine, in a hypothetical world, you could retaliate by upping aid through Ukraine, OR (if you were being sneaky), laundering your actions through Ukraine.