[Wallace T.]

The main question on the JFK assassination should be: who benefited? The answer is first, Lyndon Johnson, who avoided his removal from the 1964 Democratic ticket and possible indictment in connection with the Billie Sol Estes scandal. Second, the elements in the Federal government that wanted full scale American involvement in Vietnam. Third, the CIA, whose enmity Kennedy had incurred. Fourth, the Mafia, when Robert Kennedy turned against them and JFK refused to provide air support to the Bay of Pigs invasion, thus ending any chance of their return to Cuba.

How would the Soviets benefit from killing Kennedy? I don't see it; Johnson would support escalation against their client state of North Vietnam.

[1Old Pro]

Third, the CIA, whose enmity Kennedy had incurred.

Witnessing the current obvious and deep corruption at the CIA, I'd place my bets on the CIA.

[cgbg]

You need to add a fifth party who benefited from the assassination.

JFK ferociously opposed nuclear proliferation and refused to allow Israel to get atomic weapons.

Once JFK was out of the way LBJ gave the Israelis the green light to get the bomb.

Check out this Wikipedia entry on JFK’s hand picked CIA Director who resigned (once LBJ took power) over this issue:

https://en.wikipedia.org/wiki/John_A._McCone

Here is the key quote:

“McCone resigned from his position of DCI in April 1965, believing himself to be unappreciated by President Lyndon B. Johnson, who, he complained, would not read his reports, including on the need for full-fledged inspections of Israeli nuclear facilities”