As I said, the objectives of the conference are unclear. That is why the P5 nations have not attended in the past. The hon. Gentleman suggests that we are doing nothing. We have reduced the number of nuclear warheads that we possess by well over 50% since the peak of the cold war. In 2010, this Government announced further reductions to no more than 120 operationally available warheads and a total stockpile of no more than 180 warheads by the mid-2020s. That is action, which is what the Government need to pursue.