Earlier quoted context omitted.
HN, like any subreddit, has inherent bias in its moderation. I suspect the fact that Russia was involved prompted the removal of the other story -- if I were a moderator, I would just expect any thread involving Russia and international politics to be a dumpster fire. Finland is a bit easier for Americans to avoid passionate political opinions with.
Moderators didn't do anything to either that submission or this one. Users flagged them. I did change the title on this one to match what the article currently says; that's all.
Fwiw The original title as I recall also reflected the title of the article (which seems to have changed since I submitted it); I clipped the "Finnish" prefix as it exceeded HN permitted length.