1. Was there more than one shooter?
The sequence, number and direction of the shots that were fired in Texas remains a subject for debate with many believing the official government version of events to be implausible and pointing to the existence of a second shooter.
Through studying the Zapruder film the Warren Commission concluded that of the three shots that were fired one missed Kennedy completely, another hit him in the neck causing a non-fatal injury, and another - the fatal shot - hit him in the head.
Conspiracy theorists claim the Single Bullet explanation put forward by the Commission to explain timing discrepancies in the Zapruder film is implausible and indicates Oswald didn't act alone.
It is also the case that around 40 witnesses claimed to have seen gunshots or smoke from the infamous grassy knoll in the northwest corner of Dealey Plaza.
Indeed, even the murdered president’s niece, former Maryland Lt. Governor Kathleen Kennedy Townsend, recently questioned whether her uncle’s killer acted alone.
2. Where was Kennedy hit?
In one of the most memorable scenes in Oliver Stone's film
'JFK', based on the book 'On The Trail of The Assassins' by Jim
Garrison, the lead character is shown watching the Zapruder film -
in particular frames 312 and 313.
The footage appears to show Kennedy's head snapping back and to
the left. According to Stone, and many other critics of the
official version of what happened in Dallas, the footage is
evidence that Kennedy was shot from the front.
Stone, among others, continues to maintain also that witnesses
corroborated the idea that Kennedy was shot from the front.
Interviewed recently on CNN Stone remarked that "Most of the
witnesses saw a huge exit wound on the back of his right skull,
huge. They described the cerebellum falling through the skull in
the Parkland Hospital."
Many theorists claim during the subsequent autopsy the back of
the President's head was patched up.
3. What happened to Kennedy's brain?
In his recent book, End of Days: The Assassination of John F. Kennedy, James Swanson claims that Robert F Kennedy, who was later assassinated himself, took his brother's brain in a bid to hide the true extent of President Kennedy's illnesses.
Others have claimed that the brain would help to come to a final
conclusion about the direction of the fatal shot that killed
Kennedy - hence its disappearance. What happened to the brain
remains a mystery.
4. Are the Oswald backyard photographs
The famous backyard photographs of Lee Harvey Oswald posing with a Carcano rifle and holding up Marxist newspapers are among the most compelling evidence against Oswald. The rifle's markings appear to match those on the gun found in the Texas Book Depository after the killing.
Oswald, during interrogation, insisted the photos were fake. The
House Select Committee subjected the images to extensive analysis
and concluded they were genuine but many remain unconvinced
pointing to the differences in the images published in Life
magazine and The Detroit Free Press. One image shows a sniper scope and the other doesn't. This theory has been widely discredited,however, and explained as an anomaly of photo editing practices of the time.
5. Was the original autopsy report destroyed?
According to T. Jeremy Gunn, who worked for the Assassination
Records Review Board, the 1996 deposition of James Joseph Humes, who was one of the doctors who performed the autopsy on Kennedy, reveals that the procedure was not carried out in the normal manner. Humes claims that some procedures were missed, including that of removing and weighing all the organs.
Aside from the question of why these actions were not carried
out in the usual manner, Humes also states that the handwritten
version of the autopsy in the National Archives is not the
original. He claims he took the original blood stained version home
after becoming concerned that it would becoming a macabre exhibit.
He says he burned the document.
Asked if the original had anything in it that the copy didn't,
according to NPR, he said "I don't think so."
6. Were the original autopsy photographs tampered
There is also continuing controversy over the official autopsy
photographs. During her 1997 deposition Sandra Spencer, who
reportedly processed the film, said they were not the pictures that
"The prints that we printed did not have the massive head
damages that is visible here," she told T. Jeremy Gunn.
7. How much interest did the authorities have in Lee Harvey Oswald?
The true extent of the relationship between Lee Harvey Oswald
and the CIA will probably not be known at least until the release
of CIA's JFK assassination files in October 2017.
What is known is that CIA aggressively tracked Oswald's
movements. Senator Richard Schweiker once remarked that the CIA had their "fingerprints" all over the young alleged assassin.
8. What did the CIA know about the links between Oswald and Cuba?
In his book 'A Cruel and Shocking Act' journalist Philip Shenon
seeks to shed some light on a little known visit to Mexico, at the
time a hotbed of cold war espionage, by Lee Harvey Oswald.
According to the book witnesses place Oswald at a party with a
Mexican woman who worked for Cuba.
Other witnesses claim that Oswald vowed to kill Kennedy and met with a Soviet official who allegedly dealt with assassinations. The Warren report was largely incomplete on what the FBI and CIA knew about the visit as documents were lost.
Left with little to go on the commission were forced to
disregard any suggestion of links between Oswald and the Russians
or Cubans. Many believe that the currently classified documents
relating to the assassination (due to be released in 2017) may shed
further light on Oswald's relationship - if indeed there were any -
with the CIA.
9. Was Jack Ruby an FBI informant?
The man who shot Lee Harvey Oswald, a nightclub operator in Dallas, Texas, named Jack Ruby, is a staple of many of the Kennedy conspiracy theories. Many claim he killed Oswald as part of the wider plot to assassinate President Kennedy, and that he had significant links to organized crime.
According to the House Select Committee on Assassinations report Ruby was casually employed as a provisional criminal informant. Conspiracy theorists allege that Ruby's relationship with the police and the FBI was played down in order to avoid the suggestion of a greater conspiracy and to undermine the knowledge relating to his links with organised crime.
10. What is in the CIA assassination files to be declassified in 2017?
Thousands of pages of documents related to the investigation of Kennedy’s death remain classified prompting further speculation and allowing unanswered questions to remain unanswered.
Author Jefferson Morley along with former House investigator G. Robert Blakey and others have this week launched a bid to get the CIA to release these documents - which remain protected for reasons of national security.
Some argue that by withholding Kennedy-related documents the CIA continues to encourage the public to believe they’re covering up something more sinister.”
Among the many details campaigners believe could be contained within the files is information about now-deceased CIA agent George Joannides and his possible contact with Lee Harvey Oswald.