At least in my part of Europe, the position you describe is also the position of most leftist and communist organisations. Whether that’s because open support for Russia or Iran is a sure way to put a target on your back for intelligence agencies and possible criminalisation, or if it’s because it’s actually the majority position is unclear to me.
It is becoming more common for people to openly support Iran in their fight against US imperialism, but support for Russia remains very controversial. Most orgs will say that working class people suffer from war, and that all sides should seek for diplomacy above everything else. That’s also the largest argument against increased military spending. But it’s not a very convincing argument to the masses who believe that Ukraine deserves our material support (at least where I live).
Only recently has local leftist media started reporting on the Ukrainian neonazi movement and how it’s selling off all its capital to Western investors, I think because they realise that support for Ukraine in the West needs to fall before people are willing to get behind an anti militarisation platform.