Cardinal Richelieu between Vattel and Machiavelli

The view that no form of international law existed in seventeenth-century France, and that this time was a part of ‘prehistory’, and thus irrelevant for international legal thought today is challenged. In addition, the traditional claim of Richelieu to be an admirer of Machiavelli and his Ragion di Stato doctrine to the detriment of the aim of concluding treaties and keeping them (as sacred), is refuted by careful historical research. In Richelieu’s thinking, there is a role for law to play but it is law as justice, law in the classical natural law tradition. Those who rule are subject to the rule of law as justice, the rule of God, or the rule of reason. In Richelieu’s world, kings and ministers are rational instruments of the practical implementation of God’s will on earth.