The long-awaited release of tens of thousands of files on the assassination of President John F. Kennedy has sparked a desperate search for new clues in the shocking crime more than 60 years on.

Gordon Corera’s account of the audacious counter-intelligence operative Vasili Mitrokhin is non-fiction that reads like a spy thriller.

“Nikonov is now confident that Oswald was at no time an agent controlled by the KGB.” The files “reflected that Oswald was a poor shot when he tried target firing in the USSR.

The KGB files “also reflected that Oswald was a poor shot when he tried target firing in the USSR,” the document said. Some conspiracy theorists have latched onto bits and pieces of the CIA ...

According to this file, Nikonov "personally reviewed KGB files to determine if Lee Harvey Oswald had been a KGB agent. He reviewed 5 thick files on Oswald. Nikov is now confident that Oswald was ...

About 2,200 files consisting of more than 63,000 pages were posted by the US National Archives and Records Administration revealing the KGB thought the convicted gunman, Lee Harvey Oswald, was a ...

According to this file, Nikonov "personally reviewed KGB files to determine if Lee Harvey Oswald had been a KGB agent. He reviewed 5 thick files on Oswald.