Fidel Castro is probably the man who survived / foiled the most assassination attempts (with a lot of help of the KGB).
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estimated the number of assassination schemes or actual attempts by the Central Intelligence Agency to be 638 (according to the Church Committee)
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But most of these cases are still shrouded in the veil of secrecy by the intelligence agencies, so there is still a lot of guesswork and substantial amount of secret records involved.
https://en.wikipedia.org/wiki/Assassination_attempts_on_Fide...