Abstract and Keywords
This article addresses the purpose of contemporary defence and security efforts by exploring the three questions—the thing to be defended, the antagonist(s), and the specific field(s) of action and actor(s) involved. It ends with brief speculations on what this evolution might mean for the whole world strategic scene. Defence of the homeland is a strong, simple, and universal motive for fighting. Article 51 of the United Nations Charter, acknowledging the universal right of self-defence, is most straightforwardly read as referring to it. However, it does not follow that this has always been the default model and that anything more complex is a modern artefact.
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