Covenants without swords are but words." Thus did Hobbes sum up, typically, one of the more elementary and depressing truths of political science.

At the root of save all the most primitive or the most celestial of social organizations there must lie the sanction of force: force not to create right but to uphold it; force to assure order, to cow rebellion at home and to subdue enemies abroad. That it is not in itself the foundation of society, that it is only the one factor out of many which go to constitute a political community, has been emphasized by political thinkers at least since the days of St Augustine. But as yet no community of any degree of complexity has succeeded in existing without force, and the manner in which that force is organized and controlled will largely determine the political structure of the State.