Effective authority

In traditional international law,"Effective Authority" has been the applicable criterion in recognizing the legitimacy of governments and their recognition by other states. The United Nations also took note of this criterion in accepting representatives identified by governments. However, after the Cold War, a new criterion, the "Democratic Legitimacy," was introduced to recognize the legitimacy of new governments. Increasing attention to human rights and adherence to democratic norms in governance has strengthened this theory among jurists. The main question of this article is what is the applicable criterion in examining the "legality of governments" in international law? In this article, which is written by descriptive-analytical method and by studying books and articles, we examine the application of the theory of democratic legitimacy in the recognition of governments. By studying the change of governments after the adoption of the UN Charter until 2020, we conclude that the theory of democratic legitimacy was applied only in response to military coup d'état against democratically elected governments after the end of the Cold War. In other causes of regime change including revolutions and civil war; The New Government is recognized by the international community and credentials of its representatives accredited to the United Nations on the basis of the traditional criterion of effective authority. However, there are few exemptions such as Islamic Emirate of Afghanistan.