@Nolongerteaching (me neither)
If you ban the European Court ruling over the UK you can introduce your own laws that reduce human rights to UK citizens and gradually move to a more authoritarian state which we have been doing quietly over the last few years. This will take out Britain as an anti Russian power and revenge for supporting Ukrainian move towards Europe centred politics and western democracy.
France, support Marine Le Pen and rouse up the farmers and fishermen.
The US and Europe were the biggest power blocks that were "anti Russian"
If Ukraine had been successful I would be moving in on Moldova. I have already got break away blocks in both Moldova (?) and Georgia thus preventing them from moving towards the EU/NATO.
I am going to stir up Serbia and former Yugoslavia into trouble again. Won't take much effort.
Turkey is in Nato and I will move it even further away from NATO ideals than it is already.
Finland might need dissuading from joining NATO or need to reap the consequences of joining.
Keep the squeeze on Belarus keep them mine.
Keep poking various states with sorties into airspace and territorial waters so that their armed forces need the resources at home not in Ukraine or Serbia or on the NATO borders. It uses up their resources too.