The term “geopolitics” is flung around a lot these days, but what does the concept mean? Professor Jeremy Black and Graham Stewart begin their exploration of world politics and theory

Professor Jeremy Black and Graham Stewart finally reach the station as their series on the history of railways ends — discussing the slower rate of innovation and the complexities of investment.

Professor Jeremy Black and Graham Stewart discuss why rail projects often end up mired in delays and cancellations, from Facebook’s bridge to nowhere to HS2.

Professor Jeremy Black and Graham Stewart discuss the realities of modern rail — from the costs of construction to the limits of geography.

Professor Jeremy Black and Graham Stewart avoid train triumphalism in discussing the complex political and environmental circumstances that surround modern rail.

Professor Jeremy Black and Graham Stewart discuss rail in Britain in the 20th century, and why the infamous Beeching cuts must be seen in their proper historical context.

Professor Jeremy Black and Graham Stewart discuss the evolution of railways in the mid-to-late 20th Century, and their influence on the evolution of the age, considering labour disputes, nationalisation and the Cold War.

Professor Jeremy Black and Graham Stewart discuss the use of rail travel in WW2, from the logistics of war to the architecture of genocide.

In the early decades of the Twentieth Century, the USA and the Soviet Union took major steps towards becoming the two greatest powers in the world. What was the state of their railways? Professor Jeremy Black and Graham Stewart discuss.

Rail in the interwar period was not just Hercule Poirot on the Orient Express. Professor Jeremy Black and Graham Stewart discuss the politics of rail travel in the 1920s and 30s, from Stanley Baldwin to Benito Mussolini.