Columbia subject headings:
Russia (Federation)--Foreign relations--Ukraine.
Russia (Federation)--Politics and government--1991-
Ukraine--Foreign relations--Russia (Federation)
Ukraine--Politics and government--1991-
Harvard subject headings:
Russia (Federation)--Foreign relations--Ukraine.
Russia (Federation)--Politics and government--1991-
Ukraine--Foreign relations--Russia (Federation)
Ukraine--Politics and government--1991-
Princeton subject headings:
Russia (Federation)--Ethnic relations--Political aspects.
Russia (Federaton)--Foreign relations--Ukraine.
Ukraine--Ethnic relations--Political aspects.
Ukraine--Foreign relations--Russia (Federation).