At John F Kennedy's election his wife Jackie was relatively unknown. By the time of his assassination in November 1963 she had become a force to be reckoned with. Using newly released sources in the US as well as making discoveries elsewhere including in Britain, Leaming paints a fascinating new portrait not only of Mrs Kennedy, but also of the President. She shows how Mrs Kennedy's friendship with the British Prime Minister, Harold Macmillan, enhanced the Special Relationship between the US and UK and includes revealing, never before published letters between Mrs Kennedy and Macmillan. Above all there is the woman herself: how much did she know of her husband's philandering? What was their marriage like? All this and much more is the heart of Barbara Leaming's excellent new biography.