The Cyrillization of Korean is the transcribing and transliterating the Korean language into the Cyrillic alphabet. The main cyrillization system in use is the Kontsevich system. The Kontsevich system was created by the Soviet-Russian scholar Lev Kontsevich in the 1950s based on the earlier transliteration system designed by Aleksandr Kholodovich. As a consequence of the Cold War, a Latin-script variant of the Kontsevich system is used in the states of the former Warsaw Pact, while Serbian and Macedonian follow a Cyrillization system based on McCune–Reischauer romanization owing to the Socialist Federative Republic of Yugoslavia being a non-aligned state outside the Soviet bloc.