My Lords, we have been clear about what we seek to do in respect of Trident. We have not retained weapons that we do not believe are necessary. That exactly reflects the position articulated by the President of the United States only last week when he said that the US deterrent would be reduced to the minimum necessary. As to missile defence, today we receive in London our friends from the United States led by Steve Hadley, Deputy National Security Adviser. We shall further discuss national missile defence during the course of the day, and I hope that we shall then have a clearer view of what the United States is asking us to consider.