US foreign policy has consistently revolved around the structural imperative of preventing any single power from achieving hegemonic control over the Eurasian landmass – an objective that stems from the hard material realities of geography, demography, and economic capacity. Eurasia contains the majority of the world’s population, its densest concentrations of industry, and the bulk of its critical natural resources. A dominant power on this supercontinent would be able to project influence over trade routes, energy flows, and strategic technologies. This would directly threaten US economic security and freedom of maneuver.