While war dominates the news at the moment, in fact, most of the time, wars don’t happen, and of the millions of hostile rivalries worldwide, only a fraction erupt into violence. Our guest is Christopher Blattman is author WHY WE FIGHT: The Roots of War and the Paths to Peace. Christopher Blattman is the Ramalee E. Pearson Professor of Global Conflict Studies at the University of Chicago, where he leads the development economics group and directs the prestigious Obama Scholars Program.