Boris Yeltsin: From Dawn to Dusk (, sometimes translated to English as Boris Yeltsin: From Dawn till Dusk) is a 1997 memoir book by Aleksandr Korzhakov, former head of Boris Yeltsin's security. In it Korzhakov describes eleven years of his service and the personality of his patron, first president of Russia. Yeltsin is portrayed as a heavy-drinker who hides his health problems. Korzhakov claims that he was offered $5 million for not publishing this book by business oligarchBoris Berezovsky, who is depicted as Yeltsin's courtier and a crime mastermind.