Let me get this right.
We're supposed to believe Oswald, a guy who had direct high level contacts in Moscow and Havana, was then used by his Soviet bosses to assassinate the President of the United States? The Soviets would risk total destruction, nuclear war, just to kill Kennedy? You really buy that?
No because of the planning required.
However, that a committed marxist would take it upon himself to carry out such act should the opportunity present itself has to be carefully considered. Especially since Oswald already attempted to assassinate Gen Edwin Walker earlier in the year. So, upon learning that the president would be in town and that his motorcade would pass right by his place of work, Oswald took it upon himself to change history.
See who was Marina’s uncle.