The benchmark reference for understanding the phenomenon of war What do we know about war? This much-anticipated reference book analyzes more than a thousand wars waged from 1816 to 2008 using authoritative, highly standardized, and systematic coding methods from the Correlates of War Project, which aims to reveal the underlying patterns and causes of war. Resort to War lists and categorizes all violent conflicts with 1,000 or more battle deaths and provides an insightful narrative for each struggle. The volume distinguishes between traditional interstate war, the phenomenon of extra-state war as evidenced by the Al-Qaeda– USA conflagration, intra-state war, and the new category of nonstate ethnic wars. After explaining how to determine what a "state" is and how to classify different types of wars, the authors describe each encounter and highlight major patterns across eras and regions, identifying which categories of war are becoming more or less prevalent over time, and revealing connections between the different types of war. Resort to War , the second title in the Correlates of War Series, is a definitive source for students and researchers examining patterns of international conflict; it is the essential guide to the data, trends, and context of these violent encounters. Key Features
but it does have a catalogue of every conflict of the period. They are really focused on their coding system, but it does give a superficial summary, though the history in it is frequently wrong. Most of the conflicts I knew well, I felt they were presenting wrong information.
So this is of limited use to researchers, and not for casual readers