it is the following "why cant israel live with mutual assured destruction as the usa has for decades." the reply has to do with temprament.the middle east is the region of mass suicide bombs.mass killing of civilians.hideous treatment of opponents by dictators.also impulsive actions. that is a measurable difference which makes the middle east less able to have effective control of nuclear weapons.
Russia says kills six suspected militants in North Caucasus (Reuters)
from the article: U.S. warns Iran: Meet nuclear obligations or face 'next step'