for decades, conspiracy theories have questioned whether lee harvey oswald acted alone in killing john f. kennedy in dallas 54 years ago. in a newly released memo, j. edgar hoover suppressed concern they wouldn't believe he was the lone gunman. the thing i'm concerned about is that mr. catsen back and having something issued so we can convince the public that oswald is the real assassin. one document reveals the cia intercepted a call on oswald made to a kgb officer at the russian embassy in moscow less than two months before oswald shot kennedy. oswald spoken in broken russia. and documenting a separate conversation about oswald and two cubans. one said oswald must have been a good shot. a cuban intelligence officer