ABSTRACT
T he primary purpose of the UN is to maintain international peace and security through what is broadly referred to as collective security. Collective security is premised on the idea that security is in the interest of all states, and threats to security often require a coordinated international response. States agree to confront security threats and to share in the costs of maintaining or enforcing the peace. The primary mechanisms for collective security in the UN Charter are the commitment to the peaceful settlement of disputes (Chapter VI), peace enforcement (Chapter VII), and the respect for regional arrangements (Chapter VIII). 1 This chapter explores the theory and practice of collective security at the UN by examining the requisites for successful collective security, and the roles of the UN Security Council, General Assembly, and secretary-general in supporting the arrangements. It concludes with an examination of the role of regional intergovernmental organizations (IGOs) in maintaining international peace and security.
