Gen. Jack Keane is a retired four-star general and former vice chief of staff of the U.S. Army. The conversation focuses on the advice that led President Bush to change strategies in the Iraq War via the troop surge, Gen. Keane’s remarkable career in the military, and the threats we face today.

Peter Thiel co-founded PayPal and Palantir Technologies, was the first outside investor in Facebook, and is the author of "Zero to One, Notes on StartUps, or How to Build the Future." The conversation focuses on Thiel's experiences founding companies, the state of technology and innovation, and the crisis in American higher education.

The second in an ongoing series with the distinguished Harvard government professor Harvey Mansfield, this conversation focuses on the political science of The Federalist, conservatism in America, and on feminism.

Mark Blitz is a professor of political philosophy at Claremont McKenna College and author, most recently, of "Plato's Political Philosophy." The discussion focuses on great thinkers in the history of political philosophy, ancient and modern (Plato, Aristotle, John Locke, Karl Marx, G.W.F. Hegel, Friedrich Nietzsche) and the importance of studying them in contemporary America.

The Hertog Fellow at the Ethics and Public Policy Center and editor of the policy journal "National Affairs", Yuval Levin is a leading figure in the public policy movement that has come to be known as "Reform Conservatism." This conversation focuses on how conservatives—and conservatism—should respond to the challenges of the twenty-first century.