Each Friday, I look at what the presidential contenders are saying about foreign policy. This Week: Who Kamala Harris chooses as her running mate could tip the outcome of the presidential race. 

Teaching Notes for Preventive Engagement, written by CFR Senior Fellow Paul Stares, in which he provides a comprehensive blueprint for how the United States can manage a more turbulent world.

Each Friday, I look at what the presidential contenders are saying about foreign policy. This Week: Democrats gather in Chicago next week optimistic about their chances in November. 

Paul J. Angelo is a fellow for Latin America Studies at the Council on Foreign Relations. In this year’s Preventive Priorities Survey, experts ranked “accelerating economic collapse and political …