I understand the money trail went from Russia to Cuba to Canada and then into the US.
Check out this video.
RE: "formation of the "Black Liberation Front" in Cuba, 1964"
"This is an excerpt from a 1982 CBC documentary ("No Place To Hide") on the KGB activities in North America. This portion concerns the ties between the Weathermen and the DGI (Cuban Intelligence) - By the way take special note of what is said at 1:14, 1:23, and 9:06"
[formation of the "Black Liberation Front" in Cuba, 1964]
http://uk.youtube.com/watch?v=PI_hPDpOVTE
All six parts of NO PLACE TO HIDE:
No Place To Hide: The Strategy and Tactics of [Marxist-revolutionary] Terrorism (6 parts on youtube)
http://www.youtube.com/results?search_type=&search_query=%22no+place+to+hide%22%22Grathwohl%22&aq=f