The article discusses the significance of Michel Foucault's lectures from the College de France, titled "Society Must Be Defended," in the context of communication studies. These lectures, delivered in 1976, cover key transitions in Foucault's thought, including his conceptualization of the relationship between power and knowledge, his shift from juridical to microphysical power relations, and his emphasis on resistance as a counterpoint to domination. Foucault's work challenges the liberal-bourgeois theory of sovereignty and the universalistic discourse of communicative reason, advocating for a genealogical approach that highlights local, discontinuous, and nonlegitimized knowledges. The lectures also explore the polyvalent nature of counterhistory, drawing on figures like Boudainvilliers to critique the homogenization and normalization efforts of sovereign power. The article suggests that these insights remain relevant for contemporary political economists and communication scholars, particularly in the context of war and the strategic use of "truth" and "knowledge" by sovereign powers.The article discusses the significance of Michel Foucault's lectures from the College de France, titled "Society Must Be Defended," in the context of communication studies. These lectures, delivered in 1976, cover key transitions in Foucault's thought, including his conceptualization of the relationship between power and knowledge, his shift from juridical to microphysical power relations, and his emphasis on resistance as a counterpoint to domination. Foucault's work challenges the liberal-bourgeois theory of sovereignty and the universalistic discourse of communicative reason, advocating for a genealogical approach that highlights local, discontinuous, and nonlegitimized knowledges. The lectures also explore the polyvalent nature of counterhistory, drawing on figures like Boudainvilliers to critique the homogenization and normalization efforts of sovereign power. The article suggests that these insights remain relevant for contemporary political economists and communication scholars, particularly in the context of war and the strategic use of "truth" and "knowledge" by sovereign powers.