United Nations

CE5 CE5

United Nations (UN), international organization established immediately after World War II. It replaced the League of Nations. In 1945, when the UN was founded, there were 51 members; 193 nations are now members of the organization (see table entitled United Nations Members).

Sections in this article:

• Introduction
• Diminished UN Influence and Its Uncertain Revival
• Effects of a Growing Membership
• Expanding Role of the Secretary-General
• Growing Activity of the Assembly
• Original Vision and Cold War Realities
• Origins
• The Security Council
• The General Assembly
• The Secretariat and the Secretary-General
• Organization and Principles
• Bibliography

The Columbia Electronic Encyclopedia, 6th ed. Copyright © 2024, Columbia University Press. All rights reserved.

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