My Lords, I certainly shall not in any way attempt to challenge my noble friend's extraordinary expertise which goes back over many years on this very important issue. Perhaps I may suggest that I write to him with a full list of all the measures that the Government have taken since May 1997 to further the cause of nuclear disarmament and non-proliferation. It is a long list with well over 10 items. Perhaps if I do that, and place it in the Library of your Lordships' House, it will give my noble friend the information that he needs.

I should also like to point out to my noble friend that we are very much looking forward to the nuclear non-proliferation treaty preparatory conference which is due to take place in April this year. At that conference we shall again return to some of the issues in which I know my noble friend is interested, including of course pressing very hard for negotiations on a fissile material cut-off treaty. I believe that that lies very much at the heart of taking this issue forward.