Ukraine has submitted a list of POWs to Russia for a 1,000-for-1,000 prisoner swap. Many Ukrainian soldiers have now spent over three years in Russian captivity, where they are often being tortured, abused and offered to "join Russian forces to then occupy Europe."
First of all, Russia has already fired the first shot. They’ve been attacking not just Europe but the rest of the world for years in an information war. The situation in the US can undoubtedly be tracked back to them. To attack Russia wouldn’t be a war of aggression, it would be a retaliatory strike.
Secondly, there is no way that Russia has all the military might they’ve claimed to have. On a military level they are a paper tiger. Just look at the OP, they’re trying to enlist Ukrainian soldiers to fight for them. I remember reading a little time ago about how they were even considering training and fielding children to the front. It wouldn’t be an outright war, it would be a brief struggle. A local pro-Russia militia would probably pose a greater threat than the Russian army.