A zombie invasion, although a low-probability event (only for the technical reason that zombies don’t exist) represents, for the Tufts University author “Theories of International Politics and Zombies” a “perfect, protean 21st century threat." Zombies are a prism through which we can understand how governments react to supreme emergencies -- of obvious relevance in an era when disaster seems to be visiting us with great frequency, Bloomberg News reports.

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