On Monday 19 August 1991, with perestroika no longer headline news and most foreign correspondents on holiday, Moscow Radio suddenly announced that President Gorbachev had been taken ill. Over the following three days, 70 years of communism were overthrown and a superpower was finished. For Bridget Kendall - BBC Radio's Moscow correspondent at that time - it was the biggest story of her life. Here, with the voices of the Moscow office staff who broke the story, she shares her personal diary of those three days.