"It was explained that the North Korean matter was a diplomatic inconvenience, while Iraq's non-disarmament remained a "crisis". The reason was strategic: even without WMDs, North Korea could inflict a million casualties on its southern neighbour and raze Seoul. Iraq couldn't manage anything on this scale, so you could attack it. North Korea could, so you couldn't. The imponderables of the proliferation age were becoming ponderable. Once a nation has done the risky and nauseous work of acquisition, it becomes unattackable. A single untested nuclear weapon may be a liability. But five or six constitute a deterrent. From this it crucially follows that we are going to war with Iraq because it doesn't have weapons of mass destruction. Or not many. The surest way by far of finding out what Iraq has is to attack it. Then at last we will have Saddam's full cooperation in our weapons inspection, because everything we know about him suggests that he will use them all. The Pentagon must be more or less convinced that Saddam's WMDs are under a certain critical number. Otherwise it couldn't attack him."