European States claim to have laid the foundations of the practices and rules to regulate these relations. The body of rules that governed their relations were named the law of nations and subsequently also known as international law. It has also been termed as transnational law. These rules, however, were not confined to European States only. Even in ancient Mesopotamia, Egypt, and ancient India the rulers followed certain well-accepted rules in their mutual relations such as the inviolability of the messengers of another state and rules of warfare. However, the present corpus of international law is primarily Euro-centric.