Jason Lyall is Associate Professor of Political Science at Yale University. His work examines wartime dynamics of violence, including how civilian casualties and development aid shape the attitudes and actions of civilians and insurgents during civil wars. He currently conducts fieldwork in Afghanistan, where he is part of a team evaluating USAID's programming. He also co-leads a multi-year Air Force project examining the effects of advanced weaponry in Afghanistan, Pakistan, and elsewhere. Posts reflect his personal views.