How about side effect of sanctions?
People might say: look how West is behaving, when America invaded other countries or when NATO bombed Yugoslavia no one sanctioned them, but they are doing it to us, they hate us
At the end of the day Ukraine will be in ruins, so sanctions don't help
> Putting pressure on Russian citizens motivates them to protest and take action inside of their country
Is there any evidence this has occurred in the past? Didn't work in Iran, Iraq, North Korea...
I'd much rather have the US heavily-handededly knock down the Russian economy than the alternative of involving itself militarily.