This research examines the economization of Iran's foreign policy as a key strategy for achieving sustainable development and strengthening national security.The study employs a qualitative approach within a two-stage framework. In the first stage, an initial conceptual model was developed through semi-structured interviews with 18 executive elites, utilizing grounded theory. Subsequently, to mitigate institutional bias and validate the findings, this model was reviewed and refined in a second stage by an expert panel composed of independent academics and private sector actors. Synthesized findings indicate that overt obstacles, such as inefficient bureaucracy and international sanctions, are symptoms of a deeper root cause: the 'structural conflict between economic logic and political-security logic'. This conflict, stemming from the lack of a unified political will, is the main barrier to realizing economic diplomacy. The final model posits that the success of executive strategies (e.g., institutional reforms and developing regional relations) is entirely conditional upon fulfilling a key prerequisite: the establishment of a supra-institutional political will to prioritize the economy. Ultimately, the economization of Iran's foreign policy is not a choice but a strategic imperative that requires a paradigm shift from crisis management to development strategy. The study recommends that policymakers focus shift from mere executive reforms toward establishing macro-level mechanisms to resolve institutional conflicts of interest and forge a national strategic consensus.