Article is devoted to analysis of relation between international legal theory and philosophy. Author asserts that moral, political and legal philosophy is having a great significance in international legal doctrine. Interaction philosophy and international legal doctrine in modern period of development international law realize in the contest of increasing interdisсiplinary issues. The formation of thoughtful philosophical underpinnigs of international law and his theory have determined of the falling of the positivists dogma. In this article the author argue that international legal theory possess of inherent philosophical foundations. They have been divided into methodological and ideological foundations. Philosophy influences on their de...