Who were Julius and Ethel Rosenberg accused of collaborating with?

Julius and Ethel Rosenberg were accused of collaborating with the Soviet Union. During the Cold War era, the United States was intensely focused on espionage and the potential threat of Soviet influence and infiltration. The Rosenbergs were charged with conspiracy to commit espionage for allegedly providing the Soviet Union with atomic bomb secrets, which was a significant concern for U.S. national security.

Their trial and subsequent execution in 1953 became one of the most controversial cases of the Cold War, reflecting the heightened fears of communism and the lengths to which the U.S. government would go to combat it. The implications of their actions were viewed as aiding a rival superpower in developing nuclear weapons, which was particularly alarming given the recent end of World War II and the start of the nuclear arms race. This context underlines why their collaboration with the Soviet Union was considered such a grave offense.