Recommended IR Books
1. World Politics: Trend and Transformation (11th Edition)
By Charles Kegley, Gregory A. Raymond
2. Essentials of International Relations (6th Edition)
By Karen A Mingst, Ivan M. Arreguin
3. International Relations
By Joshua S. Goldstein
4. Introduction to International Relations
By Robert Jackson and George Sorensen
Note: Consult Quality materials. For IR multiple sources are advisable. Also take care that the book you study should be essentially of post 9/11 era; therefore avoid reading Prakash Chandra's book.