Jack Goldsmith sat down with Stephen Wertheim, deputy director of research and policy at the Quincy Institute for Responsible Statecraft. He is the author of the new book, "Tomorrow, the World: The Birth of U.S. Global Supremacy." They discussed the surprising World War II origins of U.S. hegemonic militarism, the changes in what it meant to be an internationalist during this period and the domestic political origins of the U.S. embrace of the UN Charter. They also discussed the relationship between Wertheim's book and his work for the Quincy Institute, a think tank devoted to fostering U.S. military restraint.