Jim McAdams is a professor of international relations at Notre Dame, and a “Communistologist,” as Jay says. He was seen by millions in a video a couple of weeks ago, broadcast during the Notre Dame–Michigan football game. McAdams is one of the leading authorities on Communism in the world. He is the author of “Vanguard of the Revolution: The Global Idea of the Communist Party.” Jay reviewed it here. And he talks with McAdams about a number of issues, including his own background: How did a good American boy get so interested in Communism? Among the other issues are China, Cuba, Gorbachev, the United States, and the fate of liberal democracy. McAdams says, powerfully, that love is under challenge. It must be stood up for.