Complex sentence: Fagerholm became chairman for the Social Democrats after the armistice in the Continuation War, and was as Scandinavia-oriented Finland-Swede believed to be more in the taste of the Soviet Union's leadership than his predecessor Väinö Tanner.
Split into simpler sentences: Fagerholm became chairman of the Social Democrats after the armistice in the Continuation War. As a Scandinavia-oriented Finnish-speaking Finn, he was believed to be more to the taste of the Soviet Union's leadership than his predecessor Väinö Tanner.