In recent decades, many countries have adopted, to various degrees, the ideologies of commercial and republican liberalism. One salient aspect of the spread of commercial liberalism in the world has been the growth in international trade. The spread of republican liberalism has manifested itself...

Hegre (2005) offers an interesting example of cumulative science. By relaxing a restrictive assumption in Gartzke and Li (2003a), Hegre shows formally that the relationship between trade share and trade dependence need not be negative. Still, Hegre's assumptions are also in tension with his...

To combat transnational terrorism, it is important to understand its geography. The extant literature on the geography of terrorism, however, is small and focuses on the distribution and diffusion of terrorism among aggregate regions such as Europe and the Middle East. In this analysis, we study...