Was Robert Kennedy certifiably insane?

"When McCone arrived from CIA headquarters, Bobby paced the lawn of his estate with him. As Bobby later told historian and aide Arthur Schlesinger, he asked McCone point blank if the CIA “had killed my brother, and I asked him in a way that he couldn’t lie to me, and they hadn’t.” McCone was a devout Catholic, leading many to believe that their shared faith was behind Bobby’s confidence in the CIA director’s candor."

...

"‘One of your guys did it,” Bobby said matter-of-factly, calling from Hickory Hill later on Nov. 22.

He was speaking to Enrique “Harry” Williams, a veteran of the Bay of Pigs operation and the Cuban exile whom Bobby trusted most."

...

"Bobby Kennedy had once been such a rabid anti-Communist that he’d worked for Red-baiting Senator Joseph McCarthy. Yet just one week after his brother’s assassination, he sent Kennedy loyalist William Walton on a secret mission to Moscow to deliver a stunning message to Soviet leader Nikita Khrushchev. Bobby, the loyalist reported, believed that Oswald had not acted alone, according to long-concealed Soviet documents detailed in the book “One Hell of a Gamble” by historians Timothy Naftali and Aleksandr Fursenko. And, he reported, the attorney general believed that domestic hard-liners, rather than foreign agents, were responsible."

http://www.bostonglobe.com/metro/2013/11/24/his-brother-keeper-robert-kennedy-saw-conspiracy-jfk-assassination/TmZ0nfKsB34p69LWUBgsEJ/story.html