'International Relations' is a dynamic subject and therefore, needs continuous attention of the scholars. Various events and developments happened in world politics over the past two decades, such as, terrorist attack at the World Centre, Mumbai bomb blast and Pathankot attack in India, World Economic Crisis of 2008, Iraq war which ended with the Killing of Saddam Hussain, etc. had significantly affected the International Relations. The primary objective of the present book is to relook at these issues for the better understanding of the present international relations.Therefore, in this book, in chapters One to four, different approaches such as, Realism, Neo-Realism, Neo-Liberalism, Marxism, World System, Feminism, etc. are covered to understand these developments, and to further analyse as to whether these approaches have become obsolete, inadequate, or have changed with the time to cover up the above issues. These chapters give a relook to these approaches in order to comprehend and appreciate the present developments in International Relations.