what i said happened under the l.d.p. rule, and when the d.p.j.dministration came into office, they started to talk more about a world free of nuclear weapons. that is fine, and this is consistent with u.s. nuclear policy. but the talk about nuclear deterrence subsided a little bit, and we would like to see it come back again. the second one, vis-a-vis north korea, we talk about deterrence. when we talk about extended nuclear deterrence, we are talking about deterrence by punishment. deterrence by punishment doesn't really work. when they use nuclear weapons against us, it would not be rational situations. it would be desperate. they would attack us with nukes in a dying cause. it would be a suicidal attack. in that case, deterrence by punishment would not work very well. so what we do is try to bolster beterns by denial -- deterrence by denial capability. we have tried to introduce missile defense systems and civil protection, which is actually civil defense. thirdly, when we talk about deterrence vis-a-vis china, certainly we talk to the america