The Role of The UN Security Council in The Collective Security System

The aim of the article is to present the issue of differentiation of legal collective security systems, with particular emphasis on the role of the United Nations Security Council. The article indicates that despite the existence of various collective security systems, including The European Union or the Council of Europe, currently the United Nations system still allows the most effective institutionalization of the legitimacy of collective response procedures. The text emphasizes the special role of the Security Council in maintaining or restoring international peace and security, resulting from the content of art. 42 UN Charter. Finally, it has been shown that the military and political competences of the Security Council, although unprecedented in legal and international dimension, have not yet been able to make the Council an effective guarantor of global security. The research problem raised in the article has both a theoretical and practical dimension. The research methods used in the work include analysis, synthesis, inference and reference to the position of representatives of the doctrine of international law. In the practical part, the author referred to the effectiveness of the UN Security Council in cases of armed conflict in countries such as the Syrian Arab Republic or Libya.