Yes. Russia invaded Finland in the winter of 1939-40 and stole land. Russia was the bad guy.
“even Roosevelt” Really. Roosevelt was a closet Communist. You are surprised he was telling Finland to bow down to the Russians?
Finland allied itself with Nazi Germany during the second world war not to prevent Soviet conquest but to win back territories lost to the USSR as a result of the winter war of 1939-40. The peace treaty that ended the war in March 1940 left Finnish independence’ intact’....... It was the reckless act of joining the Nazi attack on the USSR that endangered Finland’s national existence and cost tens of thousands of lives.
.... In 1944-45 the Red Army could have occupied Finland with impunity, but Stalin chose not to, mainly because Finnish leaders admitted their error and pledged neutrality and friendship with the Soviet Union. “Finlandisation”, as it was called, enabled Finland to remain free of Soviet domination and communist takeover.
https://www.theguardian.com/world/2018/feb/23/why-finland-allied-itself-with-nazi-germany