If we had the ability. The nuclear weapon is there for one thing only: to defend this country in the case of existential invasion. It is nothing to do with the terrorist threat or wars such as we had in Iraq. It is that one overriding thing. It is a guarantee of our absolute freedom and existence.
People talk about cost. We cannot have limitless cost. We must have discipline. There can be no blank cheque, but let us talk about some figures that we know definitively. In the first world war 10 million lives were lost. In the second world war 73 million lives were lost, mainly civilians. How many since then? Not a single one in a world war. That has not been a coincidence. Nuclear weapons are horrific, but they have kept the peace.