Columbia subject headings:
Balkan Peninsula--Foreign relations--Europe.
Balkan Peninsula--Politics and government--1989-
Europe--Economic integration.
Europe--Foreign relations--Balkan Peninsula.
Harvard subject headings:
Balkan Peninsula--Ethnic relations.
Balkan Peninsula--Foreign relations--European Union countries.
Balkan Peninsula--Politics and government--1989-
European Union countries--Foreign relations--Balkan Peninsula.
Peace building--Balkan Peninsula.
Security, International--Balkan Peninsula.
Princeton subject headings: