The goal of defeating terrorism – repeated endlessly by political leaders after each subsequent terrorist atrocity – is however simply not possible. The risk of another spectacular attack cannot be reduced to zero. But the overall level of deaths from terrorism in Western Europe is now far lower than the 400 a year at the height of the IRA and ETA campaigns in the 1970s and 1980s. Even in years of multiple Islamist attacks, such as 2015, there were 150 deaths from terrorism in EU countries. By 2019, this had fallen to ten.5 In the same year, 132 people were killed in knife-crime attacks in London, with a similar total in 2019. The death rate from terrorism has fallen even more dramatically in the US since 9/11. On average, two people per year have been killed by terrorists in the US since 2001, as against sixty-nine by lawnmowers and almost 11,500 by gun-wielding Americans.