Localism Bill

My Lords, in moving the amendment, to which I have added my name, my noble friend made it clear that it is a probing amendment. It might therefore be that the Minister is not about to accept it. If that proves to be the case, I am conscious that the Minister has received considerable advice from behind her that she should not attempt to define sustainable development now or at any time in the future. Therefore, perhaps she could confirm that the Government intend, in the not very distant future, to publish their definition of sustainable development, a definition that will subsequently appear in the national planning policy framework document. If she can confirm that, can she also confirm that it will at least reflect the balanced approach that the amendment seeks to achieve?