When Ethel and Julius Rosenberg were executed by the U.S. government, they left behind two sons, ages 6 and 10. All these years later, Robby and Michael are still trying to make sense of what happened ...

Here's what we know: Julius and Ethel Rosenberg were executed in 1953 for selling U.S. nuclear secrets to the Soviet Union after one of the most sensational Cold War-era espionage trials. They were ...