David Greenglass
David Greenglass was an American machinist and key witness in the trial of Julius and Ethel Rosenberg, testifying against them in exchange for a reduced sentence. Greenglass later acknowledged his own role in espionage, revealing that he had provided information to the Soviets about the Manhattan Project.
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Hungary:
David Greenglass was involved in the Manhattan Project and later testified against his sister Ethel.
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Hungary:
David Greenglass was involved in the Manhattan Project and later testified against his sister Ethel.
5