This book is a general survey about exactly what it says in the subtitle, although not exactly how I expected it to be told, as it tended to focus on the bigger pictures, rather than Afghanistan itself.
Pre-19th century, Tanner describes wars that mostly took place outside of Afghanistan in great detail, and included them only because at some point in during the war, part of the fight would happen in Afghanistan. This mainly included the perpetual Greek-Persian conflicts and the Mongol invasions of China and central Asia. It was almost more of a story of Afghanistan being a bystander in everyone else's wars. Afghanistan was treated as just another battlefront, rather than the focus of the study, which seems contrary to the title of this book. For most of it, I was willing to accept that Tanner had limited resources from which to draw information, since Afghanistan doesn't have a strong culture of literacy or academia, but I was frustrated by the lack of acknowledgement of the fault and what seemed to be an unconscious bias towards traditional Western alliances; it always felt like Tanner was rooting for the Greeks over Persia or any other Asian civilization.
In the 19th century and later, Tanner clearly had a lot more primary and secondary resources to draw from with the invasions by the English, Soviets, and Americans. Again, Tanner always seemed to display an unconscious bias towards Western powers, and to a lesser extent, the Soviet Union over Afghanistan. He did make some interesting comparisons between Afghanistan and Switzerland that I'd never heard before.
I was torn between giving this book three or four stars for most of it; that unconscious bias really bothered me, and I was expecting a more Afghanistan focused study, rather than something more general to Central Asia. But Tanner clearly did do a lot of research and by focusing on the bigger picture, he did put the country of Afghanistan into context, even if not its human elements.
Having been written in 2002, this book desperately needs an update covering from the capture of Osama bin Laden to the rise of ISIS.
Then came the Afterward, where Tanner took off his mask and started explicitly stating his opinions. Ho boy, did they back up my every fear making the unconsciousness of his bias now dubious. Tanner argued for stronger military intervention, argued against using drones and other UAV's, and other war hawk philosophies. Which in itself wasn't a deal-breaker, but the final offensive straw was that Tanner failed to provide solid arguments for his impassioned rants, turning an opportunity for quality debate into a right-wing shit show, undermining his credibility for the whole book.