>You are mistaken if you believe that Russian society isn't already enthusiastic.

It's a society where showing up for what the authorities do is common.

>Which law is that?

A long codicil of war conventions (Geneva, Hague) and anti-terrorism conventions. What I wrote is a common exegesis.

>Many of the sanctions... The sanctions will not go away.

As I wrote, there's a difference between 'we won't trade with you' and actively harming someone. Also, if Russia withdraws completely and lets Ukraine join NATO, I'm pretty sure the West will drop sanctions. There'll be no point in maintaining them - if you want to change Russia, you'll need a finer instrument.