h2g2 The Hitchhiker's Guide to the Galaxy: Earth Edition

I came across the quote about Z5 in Dad's "Plague of Silence" and thought it pretty good.

The salient points were these:
This world-wide organization, with its headquarter in England, had started during the second World War as an Allied Secret Service, and discovered soon after the war that private individuals were striving to take advantage of the prevailing conditions to make great fortunes or to obtain great power. So Z5 had been commissioned to work against them, and over the years it had become truly international. Where nations quarrelled or fought, Z5 took no active part. Where the hyenas came to feed off the economic flesh of the victims of war, Z5 laboured hard. If one power supplied arms to another, that was outside the scope of Z5. If one particular great combine of arms manufacturers supplied those arms, then it was Z5’s affair.