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Seated around the massive mahogany table in the Cabinet Room of the White House, President Johnson and his top diplomatic and military advisers last week discussed the unsolved dilemmas of Viet Nam and the Dominican Republic. Midway through the meeting, McGeorge Bundy glanced at his watch, slid his chair back from the table and silently departed. The President, half amused and half annoyed, gazed after him. "There," he said, "goes my debater."
As it happened, McGeorge Bundy, 46, was off for two days of discussion and debate with Harvard faculty members and...