Declassified memo from U.S. codebreaker sheds light on Ethel Rosenberg’s Cold War spy case

WASHINGTON (AP) — A top U.S. government codebreaker who decrypted secret Soviet communications during the Cold War concluded that Ethel Rosenberg knew about her husband’s activities but “did not engage in the work herself,” according to a recently declassified memo that her sons say proves their mother was not a spy and should lead to her exoneration in the sensational 1950s atomic espionage case.