The twelve‑day war of the Zionist regime against the Islamic Republic of Iran provided a context for examining the depth of the strategic discourse of Martyr Ayatollah Khamenei. The statements of the martyred Leader of the Islamic Revolution during this sensitive period, beyond immediate political reactions, constitute a multilayered discursive system that can be analyzed across security, cultural, identity‑based, and civilizational dimensions. Despite the strategic importance of this period, systematic analysis of the Leader’s speech acts and the extraction of their central themes have remained limited in the research literature. The aim of this study is to identify and explain the themes of the Leader’s discourse in confronting the twelve‑day war and to examine its relation to the horizon of the Islamic New Civilization. The research adopts a qualitative–applied approach based on textual content analysis. The official texts of the statements of Martyr Ayatollah Khamenei were analyzed through a three‑stage coding process (open, axial, and selective coding). Data were collected through purposive sampling. The analysis of the data led to the extraction of 31 main categories, organized into 11 overarching themes: representation of security threats and opportunities; consolidation of national‑religious identity; articulation of strategies of resistance and deterrence; management of public opinion; utilization of cultural and media tools; resistance against psychological warfare and distortion; strengthening of internal cohesion; preservation of the heritage of values; enhancement of regional power; promotion of courage and the culture of sacrifice; and demonstration of crisis‑management capability. The findings indicate that the Leader’s speech acts play a strategic role in consolidating the discourse of resistance, guiding the cultural orientation of society, and strengthening national resilience. This discourse provides a theoretical and practical framework for linking foreign policy with the project of the Islamic New Civilization and can serve as a basis for cultural, educational, and security policymaking.