Well in general a world War would require of multiple countries on at least 2 divided factions. If China throws in with Russia, that would be a possible world

Well in general a world War would require of multiple countries on at least 2 divided factions. If China throws in with Russia, that would be a possible world War. But with Russia alone, with the sanctions placed on them by the globe, they will likely not be able to sustain a large scale multi front conflict.