On this edition of Conversations, Lawrence J. Haas talks with host Dan Skinner about “The Kennedys in the World: How Jack, Bobby, and Ted Remade America’s Empire.” Haas, an award-winning journalist, and former senior White House official. He is the author of five other books, including “Harry and Arthur: Truman, Vandenberg, and the Partnership That Created the Free World,” which the Wall Street Journal named one of the top ten nonfiction books of 2016.