Nobody wants to invade Russia. Whats absurd is that we sit around and let them invade other countries. I understand the desire to avoid escalation but if all other avenues fail there should be a willingness among free nations to boot them out swiftly and efficiently and make it clear that their dreams of empire building are done and it's time to get their house in order instead of distracting themselves with destroying others.
Basically, there's no direct laws to prosecute other countries. There's only sanctions. And since we can't pull them in front of the Hague, we are using sanctions. And with "we" I mean all of the world except for a few rogue nations like Saudi Arabia, North Korea, China, India, and a few more iirc.