It's been a while since I've read up but I think the "government" of Russia, the Republic, is basically a bunch of incompetent asshats that are severely under-supplied. There are other factions though, so there isn't an official Russian government. It depends on who you ask. If you ask the Chinese, they'll say the eastern Russians in Siberia are the legitimate government. If you ask the Spaniards, they'll probably say the Republic are legitimate. If you ask certain rebel factions within Russia, they'll say neither are.
The Eastern Russians are backed by the Chinese, so they have Chinese equipment and reinforcements. The Republic has a shitty government going, so they have more organization than some of the other factions, but they are still probably under-supplied. The Western Russians near Finland are backed by China, but they are isolated and literally go around on horses and carriages because they have no supplies.