My guess is that the CIA knew more about Oswald's radicalization then has been previously disclosed. The guy spent three years in Russia, had a Russian wife, a

My guess is that the CIA knew more about Oswald's radicalization then has been previously disclosed. The guy spent three years in Russia, had a Russian wife, and had some contact with Cuba. Almost certainly he had some contact with Russian and/or Cuban intelligence. If the CIA knew about that and failed to stop Oswald, they might have some incentive to keep their records classified.