Twenty years ago this week, as a TV news producer in Moscow, I watched as the city where I had worked for much of the previous 18 months suddenly turned into a war zone. Political confrontation became armed conflict; demonstrations turned into a flash into riots. I am working on a longer account of that crucial week in modern Russian history for a future book. To mark the 20th anniversary, I am re-posting an entry I wrote earlier this year, with Egypt in mind, about the challenges of reporting revolutions. You can read it here. The photograph is taken from the window of the flat in central Moscow where I was living at the time.