The present study seeks to answer the question, of why the EU despite its political will to expand relations with Iran and its efforts, in particular, to maintain the Joint Comprehensive Plan of Action (JCPOA) within the framework of the designed mechanisms, failed to exercise its strategic independence and fulfill its obligations within JCPOA? The findings show that the lack of European strategic independence is due to its transatlantic dependence on three levels: Institutional security deficit, Asymmetric interdependence in the economic sphere, and the preferences of European transnational corporations concerning US markets. At the level of the institutional security deficit, Given the United States security umbrella and the lack of military-defense independence, the European Union is forced to adjust its approaches to US interests and goals. At the economic level, the interdependence of economic, trade, and highly intertwined transatlantic investment interactions and the asymmetry of this relationship (US strategic economic superiority) has severely limited the possibility of EU economic action independence. The methodology of this research is descriptive-analytical and the method of data collection in the library. In this regard, books, articles, documents, Internet resources, and comments of relevant officials have been used to collect data.
