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Trident

Those of us who have been here a long, long time find this a case of déjà vu all over again. Under a previous Government, I used the same arguments as my honourable and good friend the leader of the Liberal Democrats has used, when my assistant and I wrote the minority report for the Defence Committee. It was a brilliant report, but totally wrong. The arguments that I now hear against Trident were the ones that I used a quarter of a century ago. One of the arguments was cost. Will the Prime Minister give us a ballpark figure, so that we have an indication of whether the cost of Trident will be as low as £15 billion, as some people hope, or as high as £76 billion, as projected by the Liberal Democrats?