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Which causes did Hugo Grotius consider just reasons for going to war?
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Hugo Grotius
Portrait of Hugo de Groot (Hugo Grotius), oil on panel by the workshop of Michiel Janszoon van Mierevelt, 1631; in the Rijksmuseum, Amsterdam.
In his seminal work De Jure Belli ac Pacis, Hugo Grotius argued that war should be limited to instances where there is a just cause for conflict. Because there is no international judge to settle disputes between sovereign nations, he maintained that war must be tolerated as a means of resolving conflicts, provided those causes are equivalent to those suitable for litigation.1
Grotius identified the following as just reasons for going to war:
- Defense and Restitution: He explicitly cited the defense of one's territory and the restitution of property as just causes for war.1
- Imminent Danger: He posited that war is justifiable when a country faces an imminent threat, provided that the use of force is both necessary and proportionate to that danger.2
- Punishment: Grotius developed a theory of crime and punishment that allowed for war to be waged as a just penalty for crimes committed by independent powers or states.1
By establishing these criteria, Grotius sought to create a framework of natural law to restrain and minimize the bloodshed caused by war.1