Author Jared Diamond on 'breakdown' of American democracy

Award-winning writer and historian Jared Diamond has spent his career studying the rise and fall of civilizations. In his latest book, “Upheaval: Turning Points for Nations in Crisis,” he examines major geopolitical events of recent decades, in search of lessons to navigate an uncertain future. William Brangham asks Diamond about whether the U.S. is in crisis now and how it can solve its problems.