Columbia subject headings:
Harvard subject headings:
Balkan Peninsula--Foreign relations--20th century--Congresses.
Balkan Peninsula--Foreign relations--European Union countries--Congresses.
Balkan Peninsula--Politics and government--Congresses.
Civil war--Former Yugoslav republics--Congresses.
Ethnic conflict--Political aspects--Former Yugoslav republics--Congresses.
European Union--Balkan Peninsula--Congresses.
Princeton subject headings:
Balkan Peninsula--Politics and government--1989-
Conflict management--Balkan Peninsula.
European Union--Balkan Peninsula.
Peace-building--Balkan Peninsula.