This book is primarily an effort to study the phenomenon called insurgency that has been posing a huge challenge to the internal security of the country. Though a wealth of literature on the subject already exists, a need was felt to analyse the multiple facets of insurgency as no country barring India has witnessed this endemic for a prolonged period. The subject is so vast and dynamic that no strait-jacketed solution can be prescribed to curb this menace overnight. However, an attempt has been made to analyse this phenomenon and prescribe remedial antidotes. The author has attempted to capture the origin of insurgency which dates back to a late 18th century, and study various causes and numerous factors that fuel it. In addition, he has also attempted to study the doctrines and strategies, with special emphasis on both Islamic insurgency and other forms of uprisings in the country that continue to pose challenges to the Indian security environment. Owing allegiance to his uniform, the author has also attempted to bring out the role of air power in counter- insurgency operations. The penultimate chapter deals with shaping a viable counter-insurgency strategy and spells out the essential parameters, principles and pitfalls of such a strategy. The chapter also dwells on the political aim and the importance of a socio-economic turnabout to scale down insurgency. The use of calibrated force rather than brutal armed suppressive methods is advocated. Will insurgencies ever end? This lingering question is discussed in the final chapter and certain essential strategies, both military and non-military, are spelt out which would provide occasions and opportunities to forge a lasting solution to insurgency in India.