I don't know by whom we might be threatened. What I do know is a government [sic] we have to be prepared for any eventuality, and I do know that possessions of those nuclear weapons has kept the peace between nuclear powers far better than the possession of conventional weapons did. You know when we only had conventional weapons Europe was at war again with 21–22 years. We have had 38 years peace and in another four or five years we will have the longest period of peace in Europe for centuries. That, to me, is the greatest prize of all, and...I'm prepared to allocate that expenditure to keep peace for the people for whom I'm responsible.