Economist, corporate writer and bookworm Jonathan Duff is in the studio talking about two books by Festival 2019 authors: The New Silk Roads by Peter Frankopan, which takes a fresh look at the network of relationships being formed along the length and breadth of the Silk Roads today. He also reviews The Land Beyond by Leon McCarron, an author who followed a series of wild hiking trails that trace ancient trading and pilgrimage routes and traverse some of the most contested landscapes in the world.