The United Nations and Collective Security
The United Nations collective security system is the central legal framework through which the contemporary international order seeks to prevent conflict, respond to threats to peace, and authorize collective action under international law. Created in the aftermath of the Second World War, the Charter established a system in which the Security Council bears primary responsibility for maintaining international peace and security through peaceful settlement, sanctions, enforcement powers, and evolving peacekeeping practice. This article examines the structure of that system through Chapters VI and VII of the UN Charter, Article 51 self-defense, Security Council practice, the veto, Palestine, Gaza, South Africa’s legal activism, and the unequal political conditions that often determine whether collective security operates as a universal legal mechanism or a selectively enforced instrument of power.









