Columbia subject headings:
Europe, Eastern--Economic integration.
European Union countries--Foreign relations.
European Union countries--Politics and government--21st century.
European Union--Europe, Eastern.
Harvard subject headings:
Europe, Eastern--Economic integration.
European Union countries--Foreign relations.
European Union countries--Politics and government--21st century.
European Union--Europe, Eastern.
Princeton subject headings:
Europe, Eastern--Economic integration.
European Union countries--Foreign relations.
European Union countries--Politics and government--21st century.
European Union--Europe, Eastern.