This is a narrowly focused biography. One learns very little of Bismarck's personal life, his marriage, his family, his friendships, his avocations, and quite a lot of his political behavior, first in coming to power, then in employing it.
Crankshaw makes no attempt to be objectively neutral. While he regards his subject as something of a genius, he also regards him as a moral monster. According to Crankshaw, although he does not use the term, Bismarck was a narcissist. Ostensibly his aim was to strengthen Prussia, create a united Germany dominated by Prussia and then maintain this as a new European status quo. In the course of this project he would employ all methods, including three unnecessary wars (against Denmark, Austria-Hungary and France), and even progressive social legislation in order to undercut the socialists. But all of this, according to Crankshaw, was for personal self-aggrandizement, not for Prussia, not for Germany, not for European peace, not for the lower classes. Indeed, according to the author, Bismarck despised Prussia and the Germans.
A lot of the argument here is directed against conventional scholarship. Not being expert in the field, the nuances probably escaped me. Frankly, this book was a bit beyond me although I did appreciate learning more about the politics of Bismarck's three wars. In any case, this book, while not for everyone, should be of interest to those more accomplished than myself.