Elements of the CIA (James J. Angleton), the mafia (Meyer lansky and the kosher nostra), and the !sraeli m0ssad collaborated to k!ll Kennedy. !srael wanted Kennedy dead because he was trying to prevent them from expanding their illegal nuclear program at Dimona using the (nuclear material they stole from the United States), as well as the Kennedy brothers push to force the AZC to register as a foreign agent. !srael has over 2,700 targeted assassinations since its founding, the most in the Western world.

The OSS/CIA had been working with the Mafia since WW2 with Operation Underworld, and continued working with them to carry out targeted assassinations for a couple decades. During the Church Committee, mobster Johnny roselli testified twice about the mob's relationship with the CIA and targeted assassinations, and turned up decomposed in a steel drum before he could testify again. Sam Giancana was also gunned down shortly before he was scheduled to testify. And of course the kosher nostra had been working with the state of israel since before its creation (by 'ewish terrorists) The day before the assassination an "anti-Castro Cuban" told an FBI/S.S. informant:

"we now have plenty of money -- our new backers are 'ews -- as soon as 'we' or ('they') take care of Kennedy...."].

Another source for this is page 41 of Coup D'état In America by A.J. Weberman and Michael Canfield.

If you'd like more information, one of the best resources is Final Judgement by Michael Collins Piper. Laurent Guyenot's documentary Israel and the Assassinations of The Kennedy Brothers is probably the best documentary on the subject, and largely sources Piper's research. And somewhat related, Whitney Webb put out a great article a few years ago about the connection between the intelligence agencies and the 'ewish criminal underworld.