Robert Kagan talked about his book [Dangerous Nation: America's Place in the World from Its Earliest Days to the Dawn of the 20th Century], published by Knopf. He described U.S. global power and influence going back to the days of the Puritans. He argued that the U.S. has been increasing its global power steadily for centuries and says that the idea that the U.S. was once an isolationist power is a myth. Following Mr. Kagan's remarks, Thomas Friedman commented on the book and engaged in a debate with Mr. Kagan about some of the claims he makes about the history of U.S. foreign policy. The participants responded to audience members' questions.