This research explores the psychopathology of the U.S. state during World War II, as depicted in Christopher Nolan's film "Oppenheimer." Departing from the traditional focus on individual mental health in the study of psychopathology, this research delves into the collective psyche of a nation at war. Drawing on the frameworks of Mack (1985), Galtung (1998), and Winter et al. (2001), the research investigates the manifestations of collective psychosis, emphasizing the need for a comprehensive understanding of the psychopathology of states. The research integrates existing literature on the impact of nuclear war films and introduces the concept of structural violence, challenging the portrayal of psychopathology as an individual's trauma rather than a collective experience. The methodological approach involves a qualitative analysis of the film, emphasizing thematic examination to identify key elements of the U.S. state's psychopathology during nuclear conflict. The results reveal that "Oppenheimer" portrays the U.S. state exhibiting characteristics associated with Narcissistic Personality, Obsessive-Compulsive Personality, Paranoid Personality, Bipolar I, Delusional and Conduct Disorder, which are themes demonstrated through dialogue and visual elements from the film. Sub-themes such as patriotism, science as a function of power, immigration, military power, secrecy, conflict, polarization, paranoia, spiritual superiority, and destruction are explored, offering insights into the collective mental health of the nation during this critical period. The research emphasizes the value of clinical psychology as a field capable of extending its focus beyond individual pathology to encompass societal and group dynamics and underlying social injustices rooted by structural violence. By recognizing the unique challenges posed by evaluating the mental health of entire nations, clinical psychology can contribute to the development of new methodologies and tools for diagnosing and understanding the psychopathology of collectives and become increasingly more valuable as a field on both the individual and structural level of care.