Because MKUltra records were destroyed, it is impossible to reconstruct the operational use of MKUltra materials by the CIA overseas ; it has been determined that the use of these materials abroad began in 1953, and possibly as early as 1950.

Because MKULTRA records were destroyed, it is impossible to reconstruct the operational use of MKULTRA materials by the CIA overseas ; it has been determined that the use of these materials abroad began in 1953, and possibly as early as 1950.

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