The Revenge of Geography, Robert D. Kaplan

The Revenge of Geography: What the Map Tells Us About Coming Conflicts and the Battle Against Fate (2012)

Expands greatly on the strict interpretation of geopolitics and on how geography impacts foreign relations. Kaplan would say the map explains more than the technology stack does. I think both are important, and that the stack is now drawing new maps of its own. Read him as the corrective to a purely technological account, including mine.

Read it asking: does a chokepoint in a supply chain behave like a mountain range or like a border? One of those is permanent and the other is movable.