Why were julius and ethel rosenberg considered dangerous during the cold war? both worked to create the first atomic bombs for the ussr. both were connected to radical groups. julius had worked for the venona project. ethel was a russian immigrant who arrived after wwii.

Julius and Ethel Rosenberg were considered dangerous during the Cold War because both worked to create the first atomic bombs for the USSR.

Ethel Greenglass Rosenberg and Julius Rosenberg was a United States of America marriage executed in the electric chair accused of espionage in favor of the Soviet Union. It was the first execution for espionage of civilians in the history of the United States, in 1953.

Born into a Jewish family, Julius Rosenberg was an electrical engineer, while his wife Ethel was an aspiring actress and singer. Both were part of the Young Communist League, the youths of the Communist Party of the United States.

The origin of the trial and execution of this marriage must be sought in the leaks of nuclear secrets occurred both at the Los Alamos nuclear research center and at the University of Berkeley, where there was an important sympathetic sector of the left, especially among scientists . A former machinist from the Los Alamos super-secret center, Sgt. David Greenglass, Ethel's brother, confessed to having passed secrets to the Soviets and also accused his sister and her husband, a confession that led directly to the Rosenberg couple.

In 1995, after the end of the Cold War, various investigations of the FBI and the US intelligence services, integrated into the "Venona Project," seem to have found evidence that Julius Rosenberg worked for the Soviet espionage services, but not his wife Ethel.

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