Looks like Stephen Schwartz was right after all.
New research uncovers a link between Freud’s inner circle and the Soviet atomic bomb
The capital for Eitingon’s philanthropies originated in his family’s lucrative international fur trade, which prospered thanks to a near monopoly on export of Soviet pelts that made it, through the 1920s, the largest private U.S. importer from the USSR and gave the Eitingons a strong motivation to cooperate with successive incarnations of Soviet intelligence. Another intriguing clue was the name of a leading chekist, Gen. Nahum, aka Leonid, Eitingon, who was responsible, among other exploits, for staging Trotsky’s assassination. The debate in 1988 over whether and how Gen. Eitingon was related to Max has since been resolved by his colleagues and descendants: The two men were cousins.Little doubt now remains about the Eitingon clan’s collaboration with the Soviets—particularly by Max’s New York-based cousin (and his sometime brother-in-law) Motty, who shortly after claiming a dramatic escape from the Bolsheviks in 1918 was cutting million-dollar fur deals with them. Besides Motty’s support of pro-Soviet intellectuals, trade unions, and causes, his name has popped up in KGB documents that the journalist Alexander Vassiliev was allowed to copy in the chaotic days around the disintegration of the USSR.
HT: Intel news
More recent research on Eitingon here.
From his wiki page:
Eitingon was cofounder and president from 1920 to 1933 of the Berlin Psychoanalytic Polyclinic. He was also director and patron of the Internationaler Psychoanalytischer Verlag (1921-1930), president of the International Psychoanalytic Association (1927-1933), founder and president of the International Training Committee (1925-1943), and founder of the Palestine Psychoanalytic Society (1934) and of the Psychoanalytic Institute of Israel.