Empress Farah Pahlavi, the former Queen of Iran, reveals new insights into the life of her husband, Mohammad Reza Pahlavi - the Shah of Iran - and events that let to the Islamic Fundametalist's overthrowing of her husband's government in 1979. She will also discuss her new book: "Enduring Love, An: My Life With the Shah" with Barbara Walrters on 20/20 airing this Friday, March 5 (10-11pm, ET) on the ABC Television Networks. (U.S.A.)