"In the annals of American diplomacy, the presence of George F. Kennan stands tall and daunting, a figure of articulate intelligence who thought about the action but also beyond it. He was not always a great diplomat, for his imagination was lively, and he lacked the self-effacing patience which is so essential to the profession at its most mundane; but he was a great analyst and policymaker, one of the very few this country has produced in foreign...