Two-thirds through the book, Robert Kaplan worries that this book fits in no category: "It is not military strategy, political science, original archival history, conventional long-form journalism, traditional travel writing, memoir, or literary criticism" (p.237). He's right about that, although it has elements of all or most of the above. Kaplan, a renowned geopolitical analyst, has written 20 books of which I have read about half a dozen before this one. It is thus clear that I like his writing and his perspective on contemporary affairs. His work is always anchored in history and geography, which gives it more depth than most others. (It has to be said that many academic geographers are highly critical of Kaplan's analysis, judging him to be something of a geographical determinist and of a somewhat conservative bent; I do not subscribe to this view and, on the contrary, appreciate Kaplan's traditional approach to political geography.)
This book was, however, a harder read than any of the others that I have read. Kaplan has a fascination with history that takes him way back in time to Late Antiquity and the Middle Ages. He is also deeply interested in architecture and culture, including religion. Consequently, the early parts of the book, focusing on Trieste and Venice in Italy, are rather heavy, with much emphasis on the above aspects. Throughout the book, he expends much effort to pondering the relationship between the past powers (the Habsburg and Ottoman empires, Venice...) and the influences of Catholism, Eastern Orthodoxism and Islam. There is also an extraordinary amount of introspection.
At least to me, the book gets more interesting as the author travels down the eastern Adriatic coast, from Slovenia through Croatia, Montenegro and Albania ending up on the island of Corfu. In these parts, he talks more to people--historians and other academics, politicians, journalists and others--which adds much needed color and points of view bringing the analysis to recent history and the present. Kaplan, in my view, is in his own element when discussing the geopolitics of the region. I personally learned a lot about the history of the Adriatic and especially the Balkans.
In the final part, Kaplan ponders the future of Europe, not in the long term but what comes next and which way it will develop. He also discusses the state of nation states and the tensions between multiculturalism (as today experienced in cities), identity, and the nationalist and populist instincts that currently prevail. These are thoughtful passages.