Columbia subject headings:
Harvard subject headings:
Russia (Federation)--Foreign relations--Ukraine.
Russia--Foreign relations--Ukraine.
Ukraine Conflict, 2014-
Ukraine--Foreign relations--Russia (Federation)
Ukraine--Foreign relations--Russia.
Ukraine--History--20th century
Ukraine--History--21st century.
Ukraine--History--Euromaidan Protests, 2013-2014
Princeton subject headings:
Russia (Federation)--Foreign relations--Ukraine.
Russia--Foreign relations--Ukraine.
Ukraine Conflict, 2014-
Ukraine--Foreign relations--Russia (Federation).
Ukraine--Foreign relations--Russia.
Ukraine--History--20th century.
Ukraine--History--21st century.
Ukraine--History--Euromaidan Protests, 2013-2014.