Richard Rhodes: Did David Holloway show you the documents that the Russians published?
Hans Bethe: Not the documents, but I got recent documents like [Yulii] Khariton.
Rhodes: Ah. They also published what [Klaus] Fuchs gave them. And, I have some of it here. I wanted to show you. You may not be able to comment. I think it is probably classified material in the United States.
Bethe: I do not know.