In today’s Impromptus, I touch on Israel, Iran, and the bomb, as we must these days — a lot. I thought this reader e-mail was interesting, even arresting:

When I was a police officer, they taught us the concept of means (Does the person have a weapon?), jeopardy (Is the person threatening you with that weapon?), and opportunity (Does the person have the ability to harm you with the weapon?) with regard to assessing whether to use deadly force. Israel is approaching a time when they will have to make a “shoot or don’t shoot” decision based on these variables.