Lewis Fry Richardson was a pioneer of peace research. His brilliant, groundbreaking studies, Arms and Insecurity, and Statistics of Deadly Quarrels, showed how mathematical modeling techniques and statistical analysis could be applied to quantitatively investigate questions relating to war and...

Data from 152 countries from 1950 to 1992 are used to estimate the joint determination of external conflict, internal conflict, and the business cycle. Results show that the occurrence of a recession alone will significantly increase the probability of internal conflict, and when combined with...

We develop an economic model of terrorism. Groups undertake violent activities to change the status quo when they are unable to bring about drastic political change in the face of limited access to economic opportunity. Furthermore, these groups are more likely to resort to terrorist activity...

-super-1This paper presents an empirical analysis of what drives congressional legislation on terrorism during the period 1995 to 2010. We utilize and augment current methodology to compile and analyze data on sponsorship and cosponsorship of terrorism related data. Our results on the sources of...