I've never been to the Soviet Union and the main reason for that is I was warned several times by people from the KGB who had defected to the West that it would be very unsafe for me to go there.

In a way, I think it's the most important thing I've done.

I've tried to make a book that's accessible to the ordinary, intelligent reader. Very often books that cover this kind of subject are written by academics, for academics. But I am not an academic.