The different types of states on their diplomatic policy are discourse separate form one another so by the level of analysis and contemporary international relations give birth to the dispute of individual level, international level and intergovernmental affairs which finally lead world on the path of destruction and World War I was the outcome of such dispute. The development of international relation was not recognized until World War I. However the long tradition of drawing of social science has already enhanced its need globally. After World War I, the international relations aim to distinguish it identity from political science so the use of capitalizations of the “I” and “R” in international relations is prescribed and practice to separate from other branches of study. Therefore, this paper explore the history of international relations to get details study on subject matter.