Who was executed for passing atomic bomb secrets to the Soviets?

Related questions

• What are the sequence of events in the 1930s that led to WWII?
• How did the US. government seek to keep morale high and to control the flow of information during...
• What was the “St. Louis Affair"?
• How did President Eisenhower approach the nation's problems?
• Who attacked America at Pearl Harbor?
• On what date did the Japanese bomb Pearl Harbor?
• What was the D-Day operation?
• Why did Japan attack Pearl Harbor?
• How did the United States support the Allies with economic aid while staying out of the fighting...
• What was the main reason for the allies victory in WWII?