In addition to a four-article symposium on Afghanistan, this issue contains three stand-alone articles. The first two, respectively by Charles H. Anderton and by Sebastian Ille and Dina Mansour, both construct evoluationary game theory models to study the social evolution of violence and potential levers for intervention and the creation of peaceful environments. The third, by Uih Ran Lee, discusses the creation and application of a new dataset on the intentional targeting of civilians in war. The symposium on field research in Afghanistan is introduced by guest editor Travers B. Child and contains articles by (1) Daniel Karrel, (2) Greg Adams, (3) Jan Koehler, Kristof Gosztonyi, Keith Child, and Basir Feda, and (4) James Weir and Hekmatullah Azamy.