I don't know a single communist who supports Russia or Putin. Why would they support a capitalist state? Do you mean that they argue why, in historical materialist terms, war between Russia and the West has been caused by western expansion? In that case, they are explaining geopolitical movements to our current situation, not supporting Russia if that makes sense. I can see how "critical support" against American imperialism (eg, support with heavy criticism) can come off as being "pro-Russia" from the outside, but it really is just explaining, contra the neoliberal take on geopolitical war, why war is happening. Communists don't approach international politics as good vs bad, they are far more nuanced which can be read as "pro" things they aren't. Does that make sense? I am inebriated