Grand jury testimony from 1950, unsealed in the United States Wednesday, has called into question the outcome of one of the most sensational spy trials of the Cold War era. Legal historians say a long-secret transcript suggests Ethel Rosenberg may not have been as deeply involved as her husband Julius Rosenberg in slipping US atom-bomb secrets to the Soviet Union. Executed in 1953 via the electric chair at New York’s notorious Sing Sing prison, the Rosenbergs — both communists — remain to this day the only Americans ever executed by their own country for espionage. ‘I think everyone agrees that the evidence against Julius was quite formidable,’ said Georgetown University law professor David Vladeck, who led a legal campaign to unseal the grand jury testimony of Ethel Rosenberg’s brother David Greenglass. ‘The question is whether Ethel was an active participant in the conspiracy,’ he told AFP, ‘and the grand jury material — we’ve now reviewed it all

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