Revolution : Routledge : 9781138531987 : 1138531987 : 29 Sep 2017 : Professor C.E. Black of Princeton University called this "a valuable contribution to our understanding of the revolutionary movements that are now a worldwide phenomenon. It includes thoughtful essays on many varieties of revolution, considered in the light both of past developments and future prospects. The twentieth century was an age of revolution. Over many areas of the world the two great ideologies of nationalism and communism spawned violent upheavals, often differing in form but aiming at the transformation of the existing order by means of coups d'etat, revolutions, and "wars of national liberation." Eleven distinguished political scientists and policy theorists offer a penetrating analysis of the theoretical and substantive aspects of revolution. Their scholarly, lucid, and well-balanced essays explore the revolutionary theories and experience of several centuries and apply them to the most crucial problem of