On a hot July afternoon in 1953, George F. Kennan descended the steps of the State Department building as a newly retired man. His career had been tumultuous: early postings in eastern Europe followed by Berlin in 1940–41 and Moscow in the last year of World War II. In 1946, the forty-two-year-old Kennan authored the “Long Telegram,” a 5,500-word indictment of the Kremlin that became mandatory reading in Washington. A year later, in an article in Foreign Affairs, he outlined “containment,” America’s guiding strategy in the Cold War. Yet what should have been the pinnacle of his career—an ambassadorship in Moscow in 1952—was sabotaged by Kennan himself, deeply frustrated at his failure to ease the Cold War that he had helped launch. Yet, if it wasn’t the pinnacle, neither was it the capstone; over the next fifty years, Kennan would become the most respected foreign policy thinker of the twentieth century, giving influential lectures, advising presidents, and authoring twenty books,
