The basis of Britain's role in defence sales is the right to self-defence as enshrined in article 51 of the United Nations charter, but, of course, that question must be considered sensitively and intelligently and in the light of all the diplomatic and political factors prevailing at the time. When the conflict is over, I have no doubt that, together with the Foreign Office and the Department of Trade and Industry, my Department will look at many of those topics with that point in mind.