Columbia subject headings:
Balkan Peninsula--Foreign relations--1989-
Balkan Peninsula--Politics and government--1989-
National security--Balkan Peninsula.
National security--Russia (Federation)
National security--Ukraine.
Russia (Federation)--Foreign relations.
Ukraine--Foreign relations--1991-
Harvard subject headings:
Balkan Peninsula--Politics and government--1989-
Balkan Peninusula--Foreign relations--1989-
National security--Balkan Peninsula
National security--Russia (Federation)
National security--Ukraine
Reiter, Erich, 1944-
Russia (Federation)--Foreign relations.
Ukraine--Foreign relations--1991-
Princeton subject headings:
Balkan Peninsula--Foreign relations--1989-
Balkan Peninsula--Politics and government--1989-
National security--Balkan Peninusula.
National security--Russia (Federation)
National security--Ukraine.
Reiter, Erich, 1944-
Russia (Federation)--Foreign relations.
Ukraine--Foreign relations--1991-