My hon. Friend has long held those views, but she will also know that America is our closest friend and strongest ally. I refer her to the statement made by my right hon. Friend the Prime Minister and President Bush at Camp David on 23 February this year. The Americans have promised the fullest co-operation and consultation with the United Kingdom and all its allies. Clearly, there is a threat, because our closest ally and strongest friend, the United States, believes that there is one. Of course it is important that we prevent the escalation and proliferation of nuclear weapons, and we will work with our allies to ensure that that threat is dealt with. I assure her that we will also work with them to ensure the fullest possible co-operation.