First published in 1983, this extraordinary study provides a comprehensive systematic evaluation of cross-national theorizing and quantitative empirical evidence on four interrelated phenomena: Political violence Crises Military Coups D’ État Revolutions. Findings from social-psychological research on aggression are integrated in this outstanding study, as well as results reported in social-historical studies of revolution. The focus of the book is always on analytical perspectives and corresponding empirical evidence. The author continually highlights the sociostructural and political conditions of political violence, crises and revolutions.This exceptionally detailed and systematic inventory of theories and research on a classic triad of political science (political violence, crises and revolutions) also includes a remarkable bibliography encompassing over 3000 items.