Where land mines are indiscriminate, cheap, and brutal, drones are discriminate, expensive, and brutal. And yet they are insufficiently discriminate: the assassination of the Taliban chief Baitullah Mehsud in Pakistan in 2009 succeeded only on the seventeenth attempt.

One of the chief characteristics of a mob is its quickness. It is sudden. It pounces.

We must use terror, assassination, intimidation, land confiscation, and the cutting of all social services to rid the Galilee of its Arab population.

I was in New York City on 9/11. Grief remains from that awful day, but not only grief. There is fear, too, a fear informed by the knowledge that whatever my worst nightmare is, there is someone out there embittered enough to carry it out.

In countries with a properly functioning legal system, the mob continues to exist, but it is rarely called upon to mete out capital punishment. The right to take human life belongs to the state. Not so in societies where weak courts and poor law enforcement are combined with intractable structural injustices.

If you can't understand cheap, you must be expensive.