Combining keen analysis of current events with world history, Tim Marshall, author of the New York Times bestseller Prisoners of Geography, “one of the best books on geopolitics you could imagine,” (The Evening Standard), explains flags and their symbols—how their power is used to unite and divide populations and intimidate enemies.

From the renewed sense of nationalism in China, to troubled identities in Europe and the USA, to the terrifying rise of Islamic State, the world is a confusing place right now and we need to understand the symbols, old and new, that people are rallying round. For thousands of years flags have represented our hopes and dreams. We wave them. Burn them. March under their colors. And still, in the twenty-first century, we die for them. Flags fly at the UN, on Arab streets, from front porches in Texas. They represent the politics of high power as well as the politics of the mob.

In nine chapters (covering the USA, UK, Europe, Middle East, Asia, Africa, Latin America, international flags, and flags of terror), Tim Marshall’s A Flag Worth Dying For examines the systems of symbols that represent nation states and non-state actors (including ISIS, Hezbollah, and Hamas), and how they figure in diplomatic relations and events today.

Drawing on more than twenty-five years of global reporting experience to reveal the true meaning behind the symbols that unite us—and divide us—A Flag Worth Dying For is a winning combination of current affairs, politics, and world history.

The globe has always been a world of walls, from the Great Wall of China to Hadrian’s Wall to the Berlin Wall. But a new age of isolationism and economic nationalism is upon us, visible in Trump’s obsession with building a wall on the Mexico border, in Britain’s Brexit vote, and in many other places as well. China has the great Firewall, holding back Western culture. Europe’s countries are walling themselves against immigrants, terrorism, and currency issues. South Africa has heavily gated communities, and massive walls or fences separate people in the Middle East, Korea, Sudan, India, and other places around the world.

In fact, more than a third of the world’s nation-states have barriers along their borders. Understanding what is behind these divisions is essential to understanding much of what’s going on in the world today. Written in Tim Marshall’s brisk, inimitable style, The Age of Walls is divided by geographic region. He provides an engaging context that is often missing from political discussion and draws on his real life experiences as a reporter from hotspots around the globe. He examines how walls, borders, and barriers have been shaping our political landscape for hundreds of years, and especially since 2001, and how they figure in the diplomatic relations and geo-political events of today.

“Marshall is a skilled explainer of the world as it is, and geography buffs will be pleased by his latest” (Kirkus Reviews). “Accomplished, well researched, and pacey…The Age of Walls is for anyone who wants to look beyond the headlines and explore the context of some of the biggest challenges facing the world today, it is a fascinating and fast read” (City AM, UK).