Columbia subject headings:
Harvard subject headings:
Conflict management--Europe.
Europe--Foreign relations.
Europe.
European cooperation.
National security--Europe
Organization for Security and Co-operation in Europe.
Organization für Security and Cooperation in Europe.
Security, International--Europe.
Princeton subject headings:
Conflict management--Europe.
Méthodes & traités. Série III, Europe
National security--Europe.
Organization for Security and Co-operation in Europe.
Security, International--Europe.