In May 1956...a working party of officials submitted a report on "German Competition with particular reference to the Engineering Industries". It mad… - Correlli Barnett

[T]here is in Britain a very strong idealistic lobby which reproduces itself down the generations. Their ideals, their hopes and their morals are of course absolutely impeccable. But the question is the practicality and the consequences. Certain aspects of morality may be sound in themselves but hopelessly inappropriate when made the basis for decision-making in international relations. One has to see the world as it really is, to see the realities of power, the realities of leverage and of course the realities of your own interests.

[G]iven that we are today a country that would be as bankrupt as British Steel if it were not for the lucky strike of North Sea oil, and that our gross national product is only half West Germany's, the attempt to maintain "balanced" forces plus a nuclear deterrent constitutes an exercise in nostalgic unrealism. We are like an impoverished aristocratic family who, by petty economies, struggles to go on living in the gradually decaying ancestral mansion rather than live comfortable within their means in a bungalow. Thirty-five years after the Second World War it really is time that we faced the reality of our true status as a nation and adopted a defence policy appropriate to it.

The deal between the French and the Israelis was struck in Paris on 1 October 1956. An eighteenth-century British cabinet would not have hesitated to join in... In contrast, Eden's cabinet was riven by moral squeamishness; so too were the house prefects of the Foreign Office.
The irony lay in that the political and psychological shackles which the morally squeamish now found so uncomfortable had been forged by themselves. It was they and their predecessors who since 1918 had brought about the prevailing climate of opinion in which a state's naked pursuit of self-interest, if necessary by armed diplomacy, if necessary by war, was deemed a sin, even a crime. In furtherance of their romantic vision that a "world community" ruled by law could, and would, replace the existing world arena of group struggle, they and their predecessors had first created the League of Nations and its futile Covenant, and then, after the Second World War, the United Nations Organisation and its Charter. Since this document outlawed war except in clear cases of self-defence, it now supplied an peculiarly uncomfortable shackle for Britain, for here she was, a Permanent Member of the UN Security Council and yet secretly plotting to revert to realpolitik.