“FEB 17, 1960: A CIA briefing to the National Security Council reports on the visit of Soviet official Anastas Mikoyan to Cuba. ‘The USSR’, it states, ‘has shifted from cautious attitude to one of active support.’ The briefing also indicates that opposition to [Fidel] Castro is growing but that ‘the anti-Castro groups both inside and outside the country lack organization and effective leadership.’”
“The Bay of Pigs Invasion/Playa Giron: A Chronology of Events,” The National Security Archive, NSArchive2.gwu.edu