In 1968, Robert Kennedy was assassinated after winning the California primary, making him the favorite in the presidential race. Once in the White House, he would have been able to reopen the investigation into the death of his brother five years earlier, and we know, from numerous testimonies, that he intended to do so. Neither the assassination of John nor that of Robert is elucidated; in each case, the official thesis is riddled with contradictions which are now well documented. Because these two cases are usually handled independently, neither has been conclusively resolved. It is by connecting them in a global vision, taking into account the geopolitical context and the profound role of Lyndon Johnson, that the most credible scenario emerges.