Complex sentence: Kremlinology is the study and analysis of Soviet and today Russian politics and policies based on efforts to understand the inner workings of an extremely opaque central government, named after the Kremlin, the seat of the Russian/Soviet government.
Split into simpler sentences: Kremlinology is the study and analysis of Soviet (and today, Russian) politics and policies based on efforts to understand the inner workings of an extremely opaque central government. The term is named after the Kremlin, the seat of the Russian/Soviet government.