Eighty years ago, the U.S. used the first atomic weapons on Hiroshima and Nagasaki. Key figures from the U.S. and Japan discuss how those events impacted Japan’s decision to surrender at the end of World War II. This documentary, originally produced two decades after those events, is a companion piece to NBC News’ OPPENHEIMER: The Decision to Drop the Bomb (1965), which has been watched by millions of viewers since it was published online in 2023.