JFK had his bay of pigs, one can name faults for virtually all presidents. I think positives will come out of this whole thing. Sure, you can't learn on the job but the Cuban missile crisis is hardly something you can be prepared for.
JFK, did poorly on the "Bay of Pigs", and is generally seen as having done well on the Cuban missile crisis, it's of course, debated.
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Some time ago, I read a slew of archives from Georgetown online about past political happenings, pretty enlightening.
https://nsarchive2.gwu.edu all kinds of things, especially since many documents have been released since their original occurrence when some of them may have been classified top secret.