Motive, opportunity, means - and consequences: it is primarily the absence of a motive, and secondarily the likelihood of consequences, that keeps the prevalenc

Motive, opportunity, means - and consequences: it is primarily the absence of a motive, and secondarily the likelihood of consequences, that keeps the prevalence of street stabbings way lower that if means and opportunity were the only factors. The argument against nation-states being involved has some problems: a state can avoid becoming victim to its own work, while its own restraint would not prevent developments elsewhere.