When the Axe Cap guys are celebrating the dismantling of John Rice's fund, Ari Spyros says that he always wanted to know what it would be like to attend the Wannsee Conference. The purpose of that infamous meeting of top Nazi and SS officials in January, 1942, was to plan the details of the Final Solution to the Jewish question. A rather extreme metaphor for the much more humane elimination of a potential Axelrod competitor.
Natalie Wood, referred by John Rice when he was in the boat with Bobby, was an American actress who died in 1981 by drowning after mysteriously falling from the boat she was with her husband Robert Wagner and Christopher Walken.