Forgive my ignorance, but do you mean 4Chan is against the war in Ukraine in principle (anti-war), sides with Russia in that conflict (anti-Ukraine) or against US/West involvement in that war (anti-war but with a catch).
Participants in the general war threads on /pol/ fill every permutation of the above, including pro-war/radical pro-NATO involvement and anti-Russia elements as well.
Overall it's been more of an ideological bar brawl than a hive mind aligned in any particular direction.
