How is the concept of collective security best defined?

The concept of collective security is best defined as a collective effort by nations to maintain peace. This principle is grounded in the idea that an attack against one member of a group is considered an attack against all members, thereby creating a unified front to deter aggression and address threats to international stability. Collective security emphasizes cooperation among nations to prevent conflict through mutual defense agreements and coordinated actions.

This approach emerged prominently after World War I with the establishment of the League of Nations and later influenced the creation of the United Nations, which seeks to promote peace and security through collective action. It underscores the importance of collaboration in security matters, as opposed to unilateral actions or isolated efforts by individual states.