My hon. Friend rightly stresses the enormous scale of the problem. The threat from AIDS is no respecter of territorial integrity. The WHO should play a central role in the battle against AIDS, and we have given it our full support. We have already contributed £3·25 million to its programme, in addition to the £14 million which has been voted for domestic research into a cure for AIDS. It was precisely for the reasons that my hon. Friend gave that we decided, with the WHO, to host the important summit that will take place in London next year. I am delighted to be able to tell the House that so far we have received 94 firm acceptances from Governments, all of whom—with the exception of only seven countries —will be represented at ministerial level.