@MarshaBradyo - unfortunately it is not Russia against the world.
It is Russia against the West, which, let's face it, is fairly divided and weakened thanks to internet conspiracies, Alt right etc (perpetuated by Russia).
China isn't going to go against Russia as they also have similar plans to regain their ex-territories.
Why would the rest of the world (excluding Europe + NATO) care about Ukraine? Europe haven't rushed to help other global conflicts and disputes. The rest of the world is facing their own disputes, autocratic governments, genocides etc.