This study uses a descriptive-analytical method to critically examine the use of apocalyptic narratives, especially narratives derived from a specific branch of Christian fatalism, as a theological justification for preemptive military action against the Islamic Republic of Iran’s nuclear program. The main question of the study is: What role did Armageddon theology play in the attack on Iran’s nuclear facilities? The study is based on the main hypothesis that the use of apocalyptic theology and the invocation of “Armageddon” (the final battle in the Book of Revelation) to defend and justify a military attack on independent and sovereign countries indicates a fundamental misunderstanding and instrumentalization of sacred texts that transforms theological beliefs about the end of the world into dangerous political tools. The study concludes that the Armageddon narrative, when used as a tool in foreign policy, dangerously undermines legal and moral norms. The research findings demonstrate that military action against emerging threats, invoking religious symbols, undermines the principle of the prohibition of the use of force, weakens the collective security system, undermines multilateral mechanisms, and destabilizes the international legal order.