The hon. Member for South Ayrshire (Mr. Emrys Hughes) is against this weapon in any form. I quite understand that and many of us recognise his perfect sincerity. On the other hand, this is a question of the opinion of the great mass of the House and, I understand, of the country who believe that this weapon must be used—[HON. MEMBERS: "Oh."]—available, but in order not to be used, in order to prevent war. Holding that view, I think that we are entitled to make use of every method in our power to make the deterrent credible, to make it so powerful and so terrifying that these things will not in fact happen. That is its purpose.