Columbia subject headings:
European Union countries--Foreign relations--Ukraine.
International law.
Ukraine--History--Euromaidan Protests, 2013-2014.
Harvard subject headings:
European Union countries--Foreign relations.
International law.
Ukraine--History--Euromaidan Protests, 2013-2014.
Princeton subject headings:
European Union countries--Foreign relations--Ukraine.
International law.
Ukraine--History--Euromaidan Protests, 2013-2014.