Do economic sanctions work? Are big democracies any good at spreading democracy? What is the root cause of terrorism? It turns out that data analysis can help answer all these questions — and make better foreign-policy decisions. Guests include former Department of Defense officials Chuck Hagel and Michèle Flournoy and Chicago Project on Security and Threats researchers Robert Pape and Paul Poast. Recorded live in Chicago; Steve Levitt is co-host.

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