A crise do multilateralismo e a saída do Reino Unido da União Européia.

Abstract

International relations evolve parallel to human evolution. In this sense, it is verified that the rules that guide such relationships are especially characterized by the satisfaction of the needs of the entities involved. When it comes to International Law and the guarantee of rights for all peoples, the role of International Organizations deserves to be highlighted, bearing in mind its primary function of coordinating international relations aimed at guaranteeing rights and satisfying the needs of those involved. It is worth noting, however, that no nation is obliged to participate or continue to participate in International Treaties and this is a crucial point in international relations, since in many cases, nations choose to decide demands on an individual basis. In this sense, it is evidentethe crisis of Multilateralism, model of international grouping between countries of the world which emerged after World War II as a tool for international action capable of bringing greater equality among all nations, is evident.When it comes to economic relations, a very important event that took place in the last decade was the Brexit, demonstrating the crisis in Multilateralism, a decision taken by the United Kingdom (UK) to withdrawal from the European Union (EU) economic bloc, which affected the most diverse fields of international relations, even if in a mild way. The general objective of this study was to analyze the facts that contributed to the effectiveness of Brexit by the UK and its impact with regard to International Organizations (IO's). The methodological aspects used for this study were bibliographic, documental, descriptive, exploratory, and qualitative research. We conclude that the Brexit is still an uncertainty, considering its outcome as well as the agreements that followed it, especially regarding its promising future as a model for relationships between nations and International Organizations, such as the EU and the UK.