SONS AND BROTHERS The instant Bobby Kennedy received the news that his brother had been murdered in Dallas, he believed a simple and terrible thing that he had contributed to his brothers death. Bobby assumed that his own furious and stubborn pursuit of the Mafia, Jacks love of risk, and the machinations of the CIA, J. Edgar Hoovers FBI, as well as pro- and anti-Castro forces, had brewed the cauldron of poison that produced Lee Harvey Oswald. But as Sons and Brothers proves with clarity, wisdom and meticulous research, the reason went even deeper.