Setting aside Vladimir Putin, Xi Jinping, Narendra Modi, and Benjamin Netanyahu, each leading his country backward in different ways, the contemporary world does not offer examples of masterful, long-tenured political leadership. And so Henry Kissinger’s new book, Leadership: Six Studies in World Strategy, seems at first glance to be both timely and potentially valuable. Kissinger sets out to examine the ability of great leaders not just to deal successfully with the circumstances they face but