Trident Renewal

Mark Tami Excerpts

Tuesday 20th January 2015 Commons Chamber

[Dr Lewis]

It does indeed. I cannot think of an existing nuclear power that has done more than the United Kingdom to slim down and reduce the firepower of its independent nuclear deterrent. The response, as has been repeatedly pointed out by Government Members and by some Opposition Members, to those unilateral reductions on our part has been absolutely zero. There is not the slightest shred of evidence that if we were to abandon our nuclear deterrent completely any other country would follow suit. All that would happen would be that those near-misses, which have been discussed so eloquently today—the risks of nuclear Armageddon by accident—would continue between the superpowers if they are tangible risks, but we would add another risk: the risk that someone hostile to us with a nuclear armament could blackmail us into concessions, surrender or absolute annihilation. The risk of the deliberate firing of nuclear weapons against us is something that we would be crazy to accept voluntarily and unnecessarily.

Returning to the reluctance of democracies to launch nuclear weapons against countries that do not have them—although we use them, as I have said, continuously as deterrents—we should consider the alternative. If a dictatorship such as that in Argentina had had an arsenal of even a few small atomic weapons and the means to deliver them, no matter how many conventional forces we had had, we would not have dared to retake the Falkland Islands, because we must not project on to other countries that do not share our political principles and freedoms the sense of self-restraint that we apply to ourselves.

The third argument that I always outline is that the United Kingdom has traditionally played a more important and decisive role in preserving freedom than other medium-sized democracies have been able or willing to do. Democratic countries that do not have a nuclear deterrent have little choice but to declare themselves neutral and hope for the best or to rely on the nuclear umbrella of more powerful allies. The United Kingdom, for historical reasons, is a nuclear power, and it is much harder to defeat it than many other democracies by conventional means because of our physical separation from the continent.

The next argument is that our prominence as the principal ally of the United States, our strategic geographical position, to which I have just referred, and the fact that we are the junior partner might tempt an aggressor to risk attacking us separately. Given the difficulties of overrunning the UK with conventional forces, compared with our more vulnerable allies, an aggressor might be tempted to use one or more mass-destruction weapons against us on the assumption that the United States would not respond on our behalf. Even if that assumption were false, the attacker would find out his mistake only when it was too late for all concerned. An independently controlled British nuclear deterrent massively reduces the prospect of such a fatal miscalculation.

The fifth military argument, which was mentioned earlier, is that no amount of conventional force can compensate for the military disadvantage that faces a non-nuclear country in a conflict against a nuclear-armed enemy. The atomic bombing of Japan is especially instructive not only because the emperor was forced to surrender but because of what might have happened in the reverse scenario. If Japan had developed atomic bombs in the summer of 1945 and the allies had not, a conventional allied invasion to end the war would have been out of the question.

I tend to find that people wish to try to sweep aside the patent logic of nuclear deterrence by projecting on to historical figures events that did not happen and could never possibly be tested. The hon. Member for Na h-Eileanan an Iar (Mr MacNeil), who has now left his place, asserted that Hitler would not have been constrained by a nuclear deterrent held by the allies if he had had nuclear weapons. In 1943, Hitler proposed to use the nerve gas, tabun, which was far, far more deadly than the gases that the allies then possessed. When he consulted his chief scientists, they said that it was most unlikely that the allies had not discovered tabun too, and he therefore decided not to employ it, even though it would have had a devastating effect. That is an example of even Hitler being deterred by the mistaken belief that his enemies had a weapon when in fact they did not.

The hon. Member for Moray made his points with clarity and calmness, as always. He said that he did not think that deterrence had worked. Of course, when something does not happen—that is, world war three—it is difficult to show that it would have happened if one had done something different. However, I always apply the test of the proxy war. The right hon. Member for Lewisham, Deptford (Dame Joan Ruddock) observed that throughout the cold war period many proxy wars went on around the globe. In fact, that is an argument in favour of the case that nuclear deterrence had something to do with the fact that the superpowers did not fight each other in Europe. If no other conflicts had been going on among proxies of the superpowers, one could have argued that they would not be likely to have been at each others’ throats if they did not have a nuclear deterrent. The fact that they were fighting each other by every means possible other than open war—state to state—on the European continent strongly suggests that the possession of the nuclear deterrent, and the balance of terror, had something to do with that stability.

[Mark Tami (Alyn and Deeside) (Lab)]

The hon. Gentleman will no doubt agree that in the preceding period, which is the only thing we can base our evidence on, there was a whole series of European wars with the major powers fighting each other.

[Dr Lewis]

Exactly. That leads us back to the heart of what the concept of deterrence requires in order to work. Deterrence means that a potential aggressor must not only face a degree of retaliation that is unacceptable if inflicted, but be convinced that that retaliation is unavoidable.

The key point about nuclear deterrence was made in a 1945 study by the leading defence scientist when nuclear weapons were first being considered as a concept. I love quoting the example—I have done so on previous occasions—given by Professor Sir Henry Tizard, who was one of the chief scientific advisers to the wartime Government, when he first considered what the atomic bomb would mean if it worked. He said that he could see no way of preventing an atomic bomb from being used except by the fear of retaliation, and he illustrated that by saying:

“A knowledge that we were prepared, in the last resort”—

our deterrent has always been the final resort, if the future existence of the nation is at stake—

“might well deter an aggressive nation. Duelling was a recognised method of settling quarrels between men of high social standing so long as the duellists stood twenty paces apart and fired at each other with pistols of a primitive type. If the rule had been that they should stand a yard apart with pistols at each other’s hearts, we doubt whether it would long have remained a recognised method of settling affairs of honour.”

The hon. Member for Moray referred to a number of things that I will touch on briefly. He talked about our obligations under article VI of the non-proliferation treaty, which states:

“Each of the Parties to the Treaty undertakes to pursue negotiations in good faith on effective measures relating to cessation of the nuclear arms race at an early date and to nuclear disarmament, and on a treaty on general and complete disarmament under strict and effective international control.”

The only thing that is time-limited in that commitment is the cessation of the nuclear arms race at an early date. We are not engaged in a nuclear arms race with anyone. We never have been and we have successively, as I said earlier, been reducing our capacity with little or no response from the other nuclear powers.

The other two, open-ended commitments are to achieve nuclear disarmament and to achieve general and complete disarmament. The article wisely recognises the link between the two, because one thing we do not wish to do by removing the balance of terror and by achieving even multilateral nuclear disarmament is to make the world safe again for conventional conflict between the major powers.