India and China both maintain very good relations with Russia, but it is true that they don't like each other. And Iran was the attacker, not the victim. If Iran was the one attacked, I am positive that Russia would have done at least a little about it. And while Russia has its own conflict in Ukraine, it still finds ways to help Syria in their civil war. For Russia, this isn't an all-out war, so they are using limited resources and not their full power. Russia still has hundreds of thousands, if not over a million, soldiers that are not at the front lines at the moment and could be used elsewhere.