For more than 150 years, we have been living with terrorism. Like an inherited illness, it is passed from generation to generation. Waves of violence succeed one another. Early anarchists, fascists, 1960s revolutionaries, hijackers of the 1970s, 1980s militant nationalists, Islamist extremist or extreme rightwing hatemongers, all are variations on a dismal theme.
Decades of security strategies and debates over definitions have come to no conclusion about the elusive “root causes” of terrorism. Since the 9/11 attacks of 2001, we have seen the most sustained
