My right hon. Friend is right. I do not want to go back over the historic debate but there are those who argue that if the Americans had not used those atomic bombs, the death count of US troops having to invade the Japanese mainland would have been astronomical. No one wants ever to have to use that weapon. It is an horrific thing.
I conclude with what, to me, is the fundamental point. Nuclear weapons are the single most horrible thing ever invented by man, but they have given us the most beautiful thing and we should never take it for granted. They have given peace in our time to every generation represented in this House, and we should not take that for granted. Instead of voting for complacency and relying on others to defend us, we must vote to stand firm and to deliver and guarantee that peace for many more generations to come.