An exploration into the problems associated with terrorism in the modern era. The subject will be treated historically, chronologically and thematically, with emphasis on the 19th and 20th centuries. We shall also be examining three main geographic areas -- Europe, Russia and the U. S. Comparisons will therefore be made of the different genres of terrorisms that have functioned in these and other localities, including Latin America and Africa. We conclude with the road to 9/11.