Objective: This article delves into the functions and distinctive features of major international organizations, with a primary focus on the United Nations (UN), European Union (EU), Council of Europe (CoE), Organization for Security and Cooperation in Europe (OSCE), North Atlantic Treaty Organization (NATO), and World Trade Organization (WTO). It provides a clear definition of international organizations as voluntary associations among states with specific objectives while examining the factors contributing to their formation.
 
 Methods: The study employs a range of research methods, including a comprehensive analysis of existing literature, statistical comparisons to elucidate key concepts like "legal order," "international legal order," "international security," and "global security." It employs a historical perspective to trace the evolution of international organizations and utilizes generalization and diagnostic methods to offer practical recommendations and conclusions.
 
 Results: Global security concerns encompass various domains such as public health, environmental sustainability, energy security, and more. This article underscores the distinction between "international security" and "global security," emphasizing the latter's more encompassing scope. Furthermore, it highlights the central role played by the United Nations (UN) in preserving global peace, nurturing friendly relations among nations, promoting international cooperation, and serving as a platform for harmonizing diverse national actions.
 
 Conclusions: International organizations, most notably the UN, assume a pivotal role in upholding the international legal order and safeguarding global security against the backdrop of dynamically evolving challenges and threats.
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