The Causes of War
This essay focuses on the various motives of decision-makers responsible for state policy. While smaller and weaker powers often choose to capitulate to threats, states prepared to use force have been inspired by distinct combinations of motives. These have included winning independence, imposing domination, promoting allegiance to an ideology, gaining economic advantages, and resisting the rise to supremacy of a political-military competitor. Fear of the loss of security and autonomy may lead to preventive war or intervention to maintain a favourable balance of power. While leaders as prominent as Napoleon and Bismarck have referred to deterministic models of causation in some circumstances, ‘the motive of mutual fear’ may predominate. Compared to their important role in medieval litigation, irredentist wars intended to settle legal and territorial claims have become vestigial, but they may be regarded as modern versions of wars for rights.