This summer, we're launching a special edition of The Global Cable - our 'Summer Reading List.' Every other week, we'll release a new conversation with a writer, discussing their latest book. We want to hear what inspired them, what they learned during the writing process, and more.

Our first guest is renowned journalist and author James Mann, talking about his book The Great Rift: Dick Cheney, Colin Powell, and the Broken Friendship that Defined an Era. He shares what he learned about these two famous figures in U.S. politics, and why their story matters at a moment when the United States is so divided at home and diminished on the world stage.