and Europe would take catastrophic casualties in doing so.America is an ocean away, and doesn't have to worry about war on their soil.
Europe on the other hand, can you honestly say that society is ready for events like Bucha on their soil? a Russian brigade breaks through the line, gets bogged down,isnt able to advance any further, so decides to loot , rape and mass murder the population before retreating?
Bucha and Mariupol is why the entire NATO strategy changed. it used to be that the baltics would effectively be surrendered temporarily while the European backbone mobilized, France Germany Poland etc. But thats no longer an option because intelligence knows that the Russian Soldiery, for lack of a better term, act like savage ghouls. and will put innocent men women and children to the sword for no reason other than spite.
and failing that, they will bomb a city to dust like they did to Mariupol, Bakhmut, and so many others
One thing Russia has infintely more experience than Europe, its people are used to the realities of war, Martial law, no rights, Resource scarcity, No protesting. they just behave like lemmings now. Its sad, but its an advantage.
European populations would be calling for an armistice and selling out countries on the periphery as soon as it started because they dont want to go to war.
the Russian system is far less removed from failsafes than the US one is.
while I dont think its active anymore, the russian system was rumoured to be completely autonomous too, meaning if connection was broken between points A and B, or however the network was set up, such as Moscow or the supposed command bunkers in Mount Yamantau got taken out, some missiles would launch automatically.
as I said though, I dont think they've had the dead hand turned on for many many years. trusting a soviet computer not to malfunction is like playing russian roulette with 4 in the cylinder.