An interview recorded with Sergei Khrushchev before taking his citizenship exam today. Sergei, who is now 63, has lived with his wife in Providence, Rhode Island, since 1991. He is a senior research scholar and lecturer at Brown University's Center for Foreign Policy Development. His father had led the Soviet Union for about a decade when he was ousted in 1964. Sergei edited his father's memoirs, is the author of "Khrushchev on Khrushchev," and is finishing a new book about his father.