Dan talks to Ali Ansari about the history of Iran, and discovers just how much of it there is. In this episode he focuses on Iran in the eighteenth century and its interaction with European powers.
Dan talks to Christopher Andrew about the history of intelligence from Moses to the present day.
Nicholas Crane is a geographer, explorer, writer and broadcaster. He has written and presented four notable television series for BBC Two: Coast, Great British Journeys, Map Man and Town. The Making Of The British Landscape: From the Ice Age to the Present is out now.
Dan talks to Matthew Carr about the history of the Pyrenees, a mountainous frontier that has seen conflict and co-operation from Roman times until the present day.
