Introduction to a special issue on political violence and terrorism: Political violence as contentious politics

Five lessons for future research on political violence may be drawn from the articles in this special issue. Researchers should (1) analyze political violence not as a sui generis phenomenon but as one form among others that contentious politics sometimes takes; (2) attempt to determine actors' own reasons for their choice (or rejection) of violent strategies; (3) take the "conflict situation" that encompasses the interactions of all the relevant actors (not single states, movements, or networks) as the unit of analysis for explaining collective strategic choices; (4) take the networks in which individuals interact (not single individuals) as the unit of analysis for explaining individuals' strategic choices; and (5) examine actors' decisions to eschew violence as well as their decisions to employ it in order to avoid overgeneralized explanations for the latter.