Our conversation covers quite a bit of ground. If, in particular, you want to learn more about the United States’ 19th and 20th century imperial expansion, let me recommend two books, both by journalists. The first, by Spencer Ackerman, is “Reign of Terror: How the 9/11 Era Destabilized America and Produced Trump.” And the second, by Jonathan Katz, is “Gangsters of Capitalism: Smedley Butler, the Marines, and the Making and Breaking of America’s Empire.”