Reminder: Russians have nukes.
This is the only way that is not direct military action to hit them hard. So why not?
Cutting them off from international trade, refusing shipments of semiconductors and other "dual use" resources, refusing docking rights to load/unload to Russian flagged vessels, refusing travel visas, etc etc are all ways to impose pressure on Russia to cease it's war.
Nukes are unusable, no one wants to be a king of a desert. Turkey killed Russian soldiers and downed their planes. No nuclear response QED.