https://en.m.wikipedia.org/wiki/Diplomacy_(game)

https://www.counterpunch.org/2019/11/22/jfk-what-the-cia-hides/

https://mcadams.posc.mu.edu/jfk_cia.htm

https://nsarchive.gwu.edu/NSAEBB/NSAEBB493/docs/intell_ebb_026.PDF