As a country that has itself been a victim of aggression, Iran has actively participated in the process of defining aggression within the framework of the United Nations since the 1950s. However, its positions during the negotiations on the definition of aggression in the UN General Assembly have received less attention from researchers. Examining the General Assembly's documents reveals that the efforts of Iran's representative, Fereydoun Adamiyat, in the first Special Committee on the Definition of Aggression in 1953 AD, as well as his stances in the Sixth Committee of the General Assembly in 1954 AD, hold particular significance given their connection to the Nationalization Movement of Iran and subsequent events. This article, by studying the United Nations' documents, seeks to elucidate Iran's agency in the process of defining aggression within this organization. In this regard, two actions of the Iranian government are examined: first, the attempt to include the concept of economic aggression, and then, the presentation of a proposed formula for the definition of aggression. This examination is conducted based on documents, using a descriptive-analytical method and through library research. In the Special Committee on the Definition of Aggression, Iran's representative attempted to broaden the concept of aggression to encompass economic aggression, pressures, and sanctions. Furthermore, in the Sixth Committee of the General Assembly, Iran's representative, in collaboration with the representative of Panama, proposed a formula for defining aggression. this article seeks to answer two fundamental questions: first, what was the place of economic aggression in Iran's agency, represented by Fereydoun Adamiyat, in the Special Committee on the Definition of Aggression? And second, what were the characteristics of Iran's proposed formula for defining aggression, and for what reasons was it abandoned?