I am grateful for what the hon. Gentleman has said. If he studies the convention carefully he will realise that the arrangements for verification are minute. We have to build on this and produce something more. However, it is hopeful so far as it goes. Certainly it is our intention to go forward to ratification, but the convention cannot come into force until 22 States have ratified. I hope that it will not be long before this happens. I agree that it is desirable to bring China into the disarmament discussions and we shall certainly do all that we can to that end.