In a new book Larry Tye, former reporter at The Boston Globe, explores Bobby Kennedy's political and personal transformation and asks what lessons it provides for an equally divided modern day America. In this exclusive excerpt, Tye suggests Bobby's metamorphosis mirrored that which the US was undergoing as it moved from the 1950s self-satisfied era of Eisenhower to the tumultuous 1960s.

A small newspaper ad offering a £10,000 reward led to the establishment of the Mahon tribunal, writes Michael Clifford.