Complex sentence: Among other positions, he served as the editor of the newspaper "Krasnoye Chernomorye", secretary of the journal "Novy Mir", special correspondent for "Izvestiya", and director of the Maxim Gorky Literature Institute in Moscow from 1945 to 1948.
Split into simpler sentences: Among other positions, he served as the editor of the newspaper "Krasnoye Chernomorye". The secretary of the journal "Novy Mir", special correspondent for "Izvestiya", and was director of the Maxim Gorky Literature Institute in Moscow from 1945 to 1948.