History Of International Relations

The history of international relations is often traced back to the Peace of Westphalia of 1648, where the modern state system was developed. Prior to this, the European medieval organization of political authority was based on a vaguely hierarchical religious order. Westphalia instituted the legal concept of sovereignty, which essentially meant that rulers, or the legitimate sovereigns, had no internal equals within a defined territory and no external superiors as the ultimate authority within the territory's sovereign borders. A simple way to view this is that sovereignty says, "I'm not allowed to tell you what to do and you are not allowed to tell me what to do." Classical Greek and Roman authority at times resembled the Westphalian system, but both lacked the notion of sovereignty.