Informed by 30 years commenting on world affairs, Tim Marshall’s illuminating explanations of global politics made his previous book, Prisoners of Geography an international bestseller. In his new book, Divided: Why We’re Living in an Age of Walls, he explains what has divided us, past and present, and offers an unflinching analysis of the fault lines that will shape our world. Walls are going up – nationalism is on the rise once more. Over 6,000 miles of fences and barriers have been erected in the past ten years and they are redefining our political landscape. Well-known for his engaging talks, Tim Marshall is a journalist, broadcaster and well-established foreign affairs commentator.