Bluffing, double-crossing, predicting, testing your enemy. The mind games of international relations are wildly complex. And at the end of the day, the outcome of the next major conflict will be decided not by military questions but by psychological ones.

Why did France lose to the Nazis, despite having more tanks, troops, and guns? How did Ukraine stand firm against Russia? Why was Winston Churchill right and Neville Chamberlain wrong? How do you know if you can trust an ally? Will the logic of nuclear mutually-assured destruction hold? How will technology shape the future of war? What will happen if China goes for Taiwan?

In an era of asymmetric warfare, of killer drones and bunker-busting bombs, it’s more important than ever to tease out the psychological games of conflict.

Dr Nicholas Wright is a leading neuroscientist who advises the Pentagon and the UK Cabinet Office on psychological strategy. His new book is Warhead: How the Brain Shapes War and War Shapes the Brain. He joins Josh to explain how all wars come down to psychology, to prediction, to second-guessing, to mental games... and how we in the West might master them.

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