Most people are unaware that London was a terrorist target as long ago as 1867. Numerous parallels can be drawn with current news stories. The worst terrorist bombing before 7/7 was in Clerkenwell in 1867 (12 people were killed). In the years since the 7/7 attacks on the London transport system, many people in Britain seem to have become convinced that we live in uniquely dangerous times and that the threat from terrorism has never been greater. In...