The Internal Security topic, even though small, requires a brilliant grasp over socio-political background of the country, relations with neighbours, international and national organisations, security agencies, etc. To understand the above areas and rising concerns of internal security satisfactorily and with minimum time and resource expenditure, for both Mains and Interview, a good source material is inevitable. This book ensures that every conceivable internal security issue is prepared at its best by the aspirant in minimum time possible. Every internal security issue has been dealt with a brief background and historical causes, probable areas of questioning by the examiner, along with complete analysis of the topic as per UPSC standards. For better grasp, every chapter has been supplemented with relevant pictures, flowcharts, diagrams, tables, quick notes etc. which will help in dealing with difficult questions or as extra points to enhance your answers. This book will prove to be the holy grail for your internal security topic in its simple, lucid and quick-to-read format.