David Cameron is telling his audience in Glasgow that having the Trident nuclear deterrent is the "best insurance policy that you can have that you will never be subject to nuclear blackmail".
It took three questions to get on to the subject of cuts, with the Prime Minister saying that "defence can't be exempt altogether from difficult decisions".
He says that the new aircraft carriers, Typhoons and other Army kit will be best in the world despite the cuts.
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ITV News visited Scotland and Wales on Tuesday and spoke to members of the public after the verdict was announced.
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President Trump has signed executive orders to advance construction of the controversial Keystone XL and Dakota Access oil pipelines.