Russia is busy with Ukraine so can't deal with Finland however they have been talking tough and posturing.
NATO members are NATO members, attacking them after they've joined NATO an orginisation basically created to fight Russia would mean you go to war with all NATO members.
Russia's preference methodogly of defence is creating distance. With Ukraine, NATO would have been extremely close to Moscow. Finland is further away but they're still not happy about it.
NATO expanding into that region was well known to be something that would threaten Russia, since it was founded to fight Russia, to the point Joe Biden said decades ago[1], that Russia expanding into that region would cause conflicts.
NATO members are NATO members, attacking them after they've joined NATO an orginisation basically created to fight Russia would mean you go to war with all NATO members.
Russia's preference methodogly of defence is creating distance. With Ukraine, NATO would have been extremely close to Moscow. Finland is further away but they're still not happy about it.
NATO expanding into that region was well known to be something that would threaten Russia, since it was founded to fight Russia, to the point Joe Biden said decades ago[1], that Russia expanding into that region would cause conflicts.
[1] https://multipolarista.com/2022/03/08/biden-nato-expansion-r...