The article is dedicated to studying the changes in the foreign policy role of the Islamic Republic of Iran amid the transformation of the international system. The relevance of the topic stems from the ongoing transformation of the international order, in which Iran seeks to secure key positions, acting as a bridge between Eurasia and the Middle East. The purpose of the study is to analyze Iran’s foreign policy stra tegies, with a focus on its involvement in international alliances such as BRICS and the Shanghai Cooperation Organization (SCO). The research sources include Iran’s stra tegic planning documents, such as the 20-Year Development Strategy and the Seventh Five-Year Plan. The study employs a systematic (comprehensive) approach, viewing international relations as a holistic, dynamic system encompassing a multitude of inter connected factors influencing Iran’s foreign policy trajectory. Methods of system analysis were used to assess Iran’s interactions with regional and extraregional actors, as well as a constructivist approach to analyze regional spaces within the framework of megaregionalization. The main conclusions indicate that megaregionalization plays a pivotal role in Iran’s new foreign policy strategy, particularly through its participation in transport projects such as the International North-South Transport Corridor and energy diplomacy. Iran is actively forming new regional and interregional alliances, expanding its economic and cultural influence, which strengthens its position in international initiatives. Thus, Iran seeks to play a key role in a polycentric model of international relations, replacing confrontation with cooperation.
Iran, global transformations, polycentric world, ideological and value factor, BRICS, SCO, Greater Eurasia.