Readers skeptical of the Camelot myth may experience twinges of schadenfreude while reading this meticulously researched, elegantly written account of John F. Kennedy's mortifying encounters with the Soviet Union's Nikita Khrushchev during the first year of his presidency. Others, on coming to the end of Frederick Kempe's molecule-by-molecule deconstruction of the Kennedy reputation for toughness, vigor, smarts and unshakable cool, are more likely to breathe a sigh of relief that civilization somehow survived the confrontation.

"Berlin...