UK's Nuclear Deterrent

Debate between Andrew Murrison and Madeleine Moon

Monday 18th July 2016 Commons Chamber

[Dr Murrison]

My hon. Friend is right, and the speech by the hon. Member for Barrow and Furness (John Woodcock) was also extremely powerful.

The redundancy proposition holds that advancing technology will make the continuous at-sea nuclear deterrent redundant. It is supposed—despite all evidence to the contrary—that unmanned underwater vessels will appear and render our oceans transparent, but that is pure supposition. We cannot approach our defence on the basis of what might happen in the future. History is usually a guide in these matters, and this year we mark the centenary of the introduction of tanks into the battle space. We could have said then, “We must not develop this technology because of the possibility of sticky bombs and tank traps”, but we did not.

[Mrs Moon]

One lesson from history must be from Nye Bevan, who said as Foreign Secretary that he should not be sent

“naked into the conference chamber”.

What sort of emperor in new clothing would go into a conference chamber with President Putin, for example, and say, “I don’t have nuclear weapons—well, I have some nuclear-powered subs, but there are no weapons on them”?

[Dr Murrison]

The hon. Lady is right. I am enjoying the consensual nature of this debate—it is the House of Commons at its very best. In 1929, J. F. C. Fuller said that tanks would make infantry redundant. In a sense he was right, but his timeframe was completely wrong, and the infantry was adapted rather than abolished. The imminent end of manned fighters was confidently predicted in a 1957 Government White Paper. The important point, which the hon. Lady was trying to make, is that we cannot base our defence on what we imagine might happen.

The threat of cyber and of unmanned underwater vessels should invigorate our countermeasures and our attempts to detect and potentially disrupt aggressors. Nevertheless, just as the Lightning II joint strike fighter may have only half a life before it is rendered obsolescent, we must be open to the possibility that the Successor submarine may at some point over its long life be made obsolete. However, I do not think that a sufficient argument to deploy against the decision we will make today.

The second proposition that I want to touch on is that of reputation theory. The argument is that unilateralism will in some way raise our standing internationally, but that is hopelessly naive. Try saying that to people in Ukraine; try waving the Budapest memo at them. Many will say that had Ukraine not given up its share of the USSR’s nuclear armamentarium—about a third of it—when it became independent, its territory would now be assured and it would not have been invaded by Russia. I do not want to take that argument too far, because others will make counter arguments about the wisdom of Ukraine having nuclear weapons—personally, I am pleased it does not—but from the perspective of a state that is trying to face down an aggressor, that is a powerful argument.

Some say that if we cut our nuclear arsenal others will follow, but there is no evidence to suggest that that is the case. We have cut our arsenal dramatically in recent years, yet other states have increased theirs.

Finally, in this atmosphere of Brexit, when we are re-forging our links with other international organisations and operating in an outward-facing way that I find refreshing, we must think about our permanent membership of the UN Security Council. That membership is contingent on this country offering something. It may pain some right hon. and hon. Members to ponder this, but in large part our membership of that body is down to our continued possession of this terrible weapon.