Tim Marshall
Natural features like mountain ranges, river networks, and open plains fundamentally structure global politics by defining the strategic options, defense postures, and economic possibilities available to nation-states.
Flat terrain creates permanent security vulnerabilities that compel nations to seek strategic depth through territorial expansion or regional spheres of influence.
Geographically blessed regions featuring interconnected river systems, fertile soils, and dual-ocean harbors naturally develop unmatched economic power and secure strategic isolation.
Land-oriented powers seeking global influence must transition from territorial containment to maritime force projection to secure maritime trade corridors and regional sea lanes.