CIA Director was Allen Dulles, brother of John Foster Dulles, President Eisenhower’s Secretary of State. President Kennedy fired him in late November, 1961. Dulles was replaced by a man named McCone. The CIA was always against a war in Vietnam. Kennedy was NOT. Against the advice of the CIA, Kennedy supported that failed 1963 coup in South Vietnam against its President (I can’t remember his name).
I remember sitting next to Dean Rusk's daughter in one of my classes. Dean Rusk was Secretary of State.
Back then, that was normal in the public schools.
Of course, most democrats back then were to the right of most Republicans in the present day.
Yes, Kennedy did initially support S. Vietnam, but there are a number of sources that have said he was going to withdraw.
That was allegedly upsetting to the military. The CIA, as I understand it was upset with the lack of air support for the bay of pigs and several other subsequent plans related to Cuba.
With all the claims and counter claims I don’t know that any of us can know with 100% certainty. I do know that Johnson escalated it, and the CIA tells falsehoods frequently.
I do know that Kennedy pissed a lot of people off, and these people had the means and opportunity to get him, and someone did - and it likely wasn’t just Lee Harvey Oswald.