---

Trident

May I follow on from the question from the hon. Member for Liverpool, Walton (Mr. Kilfoyle)? Does the Prime Minister agree that just as vital as maintaining our independent nuclear deterrent is protecting the interests of the taxpayer and value for money, particularly since this replacement is going to cost £20 billion, and starting? Should not we have a debate on whether there are other options? After all, the multiple warhead was designed to protect Moscow defences from attack, which is unlikely to occur in the future. Why should we rule out at least consideration of cruise missiles being launched from our attack nuclear submarines? What would that cost? Would it not be a fraction of the cost of this system?