My Lords, as my noble friend knows, the Government have made it crystal clear--I hope--that our goal is the global elimination of nuclear weapons. That fundamental commitment has already been made. We also want to see faster progress in that direction. I shall, of course, note what is stated in the document to which my noble friend refers, but the Government feel that it is most important that we target our attention on achievable goals so that we make incremental improvements in the situation as quickly as we can manage that.