In the shadow of the Holocaust, Israel made a determined and ultimately successful effort to acquire nuclear weapons. Just as fear of genocide is the key to understanding Israel’s nuclear resolve, that fear has also encouraged nuclear restraint. After all, if Israel’s enemies also acquired the bomb, the small Jewish state might well face destruction. Moreover, the specter of killing large numbers of innocent people was morally unsettling.
This combination of resolve and restraint led to a nuclear posture known as opacity, which is fundamentally different from that of all other nuclear weapons states. Israel neither affirms nor denies its possession of nuclear weapons; indeed, the government refuses to say anything factual about its nuclear activities, and Israeli citizens are encouraged, both by law and by custom, to follow suit.