Books interview with Christopher Tyerman: “Religious war isn’t an irrational act, and we shouldn’t dismiss it as irrational”

Christopher Tyerman talks to Matt Elton about his new book that considers the practical reality of going on crusade – and, by so doing, reveals the inherent rationality of the Middle Ages

The tomb of the Crusader knight Richard de Crupes.

This article first appeared in the September 2015 issue of BBC History Magazine.

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