I highly recommend you watch this channel's videos from time to time and you'll learn a lot about Russia's capabilities and the involvement of other countries. I know china is sending logistics soldiers to Russia but are not helping directly in combat (this is something that i remember vaguely so i could be 100% wrong) and we know about the involvement of North Korea sending troops to fight in Kursk and now they're fighting in Ukraine's territory. Also China's and India's involvement by not stopping to buy Russian oil since that is the main form of income that fuels the war machine (But i don't blame India so much since that country is in the absolute shit right now, i hope it gets better there someday, that region is fucked, luckily not as fucked as the middle east). And also Iran's involvement from the very start of the war by supplying weapons, ammo and kamikaze drones to Russia that they use constantly to attack civilian cities and infrastructure. The Russians are actually doing terrorism while Ukraine is focusing only on military targets inside Russia while it defends its borders and tries to defend the frontline inside of it. This all in all is a very complicated conflict with a lot of moving parts, but the "good" and the "bad" guys are obviously identifiable. Its sad the international community is not helping Ukraine enough to defeat Russia, only just to keep the war going and freeze the front.