I. The concept of collective security
Collective security : a historical journey
The morphology of collective security
Triggers, actors and institutions
II. Collective security components
States and collective security
The United Nations
Regional organisations
Private military and security companies
III. Collective security tools
The settlement of disputes and preventive security
State-building
Sanctions
Military security
IV. Legal management of collective security
Law as internal facilitator, regulator or constraint
Law as external facilitator, regulator or constraint
The management of normative conflicts
V. Accountability in collective security
Accountability in collective security
International responsibility and liability
Individual criminal responsibility.