Many important questions in the study of international relations are connected with the theory and practice of sovereign statehood which, as indicated, is the central historical institution of world politics. But there are other important issues as well. That has led to ongoing debates about the proper scope of international relations. At one extreme the scholarly focus is exclusively on states and interstate relations; but at other extreme international relations almost everything that has to do with human relations across the world. It is important to study these different perspectives if we hope to have balanced and rounded knowledge of International relations. This book has been designed to unravel the complexities of political science and international relations in a way that allows student a clear idea of, how the theories work and myths that are associated with them.