(21.6.2016) Nightclub shooters, like Omar Mateen? Check. Bombers, as in Brussels last year? Check. Anthrax? Check. Nuclear, chemical or biological weapons? Check, check, check.

Unfortunately for Lanier, the recent attacks in Orlando, Brussels and Paris show that you can plan and train until your budget runs dry, and still you rarely stop a determined attacker. “Lone wolves” come out of nowhere. The urban guerrillas of the Islamic State group, or ISIS, use encrypted cellphones.