This research analyses how the genetic and sociological kinship networks shaped through centuries of intermarriage, migration, and cultural interaction in Turkish society generate a form of “demographic resistance” against ethnically motivated fragmentation strategies. Conducted within Alexander Wendt’s social constructivist paradigm, the study combines historical sociology, documentary analysis, and comparative demographic methodology across four regional cases drawn from the Balkans, the Caucasus, Turkistan (Central Asia), and the Middle East. Integrating archival data from the Seljuk, Mamluk, and Ottoman periods with contemporary genetic findings and the immutable rules of mathematics, the research demonstrates the scientific impossibility of ethnic purity and homogeneity. Findings reveal that the exponential ancestral expansion—reaching 2^100 individuals within a hundred-generation lineage—renders any claim of ethnic exclusivity mathematically untenable. Even within thirty generations (roughly a millennium), the existence of 1,073,741,824ancestors mathematically confirms that approximately 85–95 per cent of Türkiye’spopulation shares common ancestry. Y-chromosome analyses by Cinnioglu et al.indicate a similar distribution of haplogroups J2, R1b, G, and E1b1b across all ethnic groups, empirically disproving any genetic basis for ethnic differentiation. These findings substantiate two original conceptual contributions: the DemographicSecurity Paradox and the Inclusive Kinship Model, both of which propose a paradigm shift in security studies by replacing conflict-centred identity theories with mathematically grounded demographic integration. The study synthesises social constructivism’s intersubjective approach with mathematical determinism, formulating what may be termed biological constructivism—a framework where identity formation operates within empirically defined demographic limits. This theoretical innovation redefines Türkiye’s foreign-policy vision through principles of cultural solidarity, shared ancestry, and demographic interdependence rather than ethnic division. Moreover, by developing a mathematical and genetic defense mechanism against identity manipulation, the study provides a novel normative instrument for global peacebuilding and conflict prevention. Ultimately, this research integrates quantitative certainty with qualitative interpretation in an interdisciplinary manner, offering a scientifically verifiable explanation of Türkiye’s demographic unity and its strategic implications for both national cohesion and international diplomacy. It thereby contributes to a broader epistemological transformation in international relations and peace studies.
Demographic Security Paradox, Inclusive Kinship, Social Constructivism, Mathematical Lineage Chain, Turkish Foreign Policy.