Anyone wanting to read up on the assassination would be wise to read at least one objective book on JFK's presidency and not this nonsensical conspiracist history that portrays JFK as someone who didn't believe in the Cold War/containment policies. He was an anti-communist not an anti- anti-communist. The Douglas portrayal of JFK, which I think is the dominant view of him among the conspiracy Left, is a fantasy, make believe, an imaginary Kennedy.
The idea that he was just going to walk away from South Vietnam, abandon it, that he was going normalize relations with Castro (the Kennedys wanted him dead, period), that he didn't believe that the Soviets and Chinese and others were an existential threat to the West is just hooey. He believed in containment and that the West was threatened by the East.
JFK in the speech he was to make in Dallas before Oswald shot him:
"About 70 percent of our military assistance goes to nine key countries located on or near the borders of the Communist bloc – nine countries confronted directly or indirectly with the threat of Communist aggression – Viet-Nam, Free China, Korea, India, Pakistan, Thailand, Greece, Turkey, and Iran. No one of these countries possesses on its own the resources to maintain the forces which our own Chiefs of Staff think needed in the common interest. Reducing our efforts to train, equip, and assist their armies can only encourage Communist penetration and require in time the increased overseas deployment of American combat forces."
That's not just political boilerplate, something to dismiss; it's someone who believes in containment not someone who wants to abandon it.
Here's a good book on his presidency:
