Roth was as murderous and ruthless, turning brother against brother
He exploited the troubled and vulnerable Fredo to exact his revenge on Michael
He never thought about Fredo -- he never gave a damn about him even if he had become the Don how he may have suffered for the rest of his life that I killed -- he contributed to the death of my brother. He injured me. I killed my mother’s son. I killed my father's son.
He was to have been dead that night so luring Michael to Havana was a ruse to keep him completely relaxed, and confident, in our friendship until the Tahoe shooting