THE WISE MEN  introduces the original brightest and best, leaders whose outsized personalities and actions brought order to postwar chaos: Averell Harriman, freewheeling diplomat and Roosevelt’s special envoy to Churchill and Stalin; Dean Acheson, the secretary of state who was more responsible for the Truman Doctrine than Truman and for the Marshall Plan than General Marshall; George Kennan, author of Containment; Robert Lovett, assistant secretary of war, undersecretary of state, and secretary of defense during the Cold War; John McCloy, one of the nation’s most influential private citizens; and Charles Bohlen, adroit diplomat and ambassador to the Soviet Union.