Last month we were joined onstage by the University of Columbia economics professor\xa0Jeffrey Sachs, as he laid out his radical new vision for U.S. foreign policy. Instead of a world where America reigns as the sole superpower, Sachs argued for a new international system of equals, where America shares power and collaborates with former geopolitical rivals to solve today\u2019s global crises. Sachs was in conversation with the BBC\u2019s Chief International Correspondent\xa0Lyse Doucet.\xa0\n\nSupport this show http://supporter.acast.com/intelligencesquared.\n\nSee acast.com/privacy for privacy and opt-out information.\nLearn more about your ad choices. Visit podcastchoices.com/adchoices