The paper is aged and fragile, the typewritten letters slowly fading. But US Military Intelligence report EW-Pa 128 is as chilling now as the day it was written in November 1944.
The document, also known as the Red House Report, is a detailed account of a secret meeting at the Maison Rouge Hotel in Strasbourg on August 10, 1944. There, Nazi officials ordered an elite group of German industrialists to plan for Germany's post-war recovery, prepare for the Nazis' return to power and work for a 'strong German empire'. In other words: the Fourth Reich.

Plotters: SS chief Heinrich Himmler with Max Faust, engineer with Nazi-backed company I. G. Farben
The three-page, closely typed report, marked 'Secret', copied to British officials and sent by air pouch to Cordell Hull, the US Secretary of State, detailed how the industrialists were to work with the Nazi Party to rebuild Germany's economy by sending money through Switzerland.
They would set up a network of secret front companies abroad. They would wait until conditions were right. And then they would take over Germany again.
The industrialists included representatives of Volkswagen, Krupp and Messerschmitt. Officials from the Navy and Ministry of Armaments were also at the meeting and, with incredible foresight, they decided together that the Fourth German Reich, unlike its predecessor, would be an economic rather than a military empire - but not just German.
The Red House Report, which was unearthed from US intelligence files, was the inspiration for my thriller The Budapest Protocol.
The book opens in 1944 as the Red Army advances on the besieged city, then jumps to the present day, during the election campaign for the first president of Europe. The European Union superstate is revealed as a front for a sinister conspiracy, one rooted in the last days of the Second World War.
But as I researched and wrote the novel, I realised that some of the Red House Report had become fact.
Nazi Germany did export massive amounts of capital through neutral countries. German businesses did set up a network of front companies abroad. The German economy did soon recover after 1945.
The Third Reich was defeated militarily, but powerful Nazi-era bankers, industrialists and civil servants, reborn as democrats, soon prospered in the new West Germany. There they worked for a new cause: European economic and political integration.
Is it possible that the Fourth Reich those Nazi industrialists foresaw has, in some part at least, come to pass?
The Red House Report was written by a French spy who was at the meeting in Strasbourg in 1944 - and it paints an extraordinary picture.
The industrialists gathered at the Maison Rouge Hotel waited expectantly as SS
Obergruppenfuhrer Dr Scheid began the meeting. Scheid held one of the highest ranks in the SS, equivalent to Lieutenant General. He cut an imposing figure in his tailored grey-green uniform and high, peaked cap with silver braiding. Guards were posted outside and the room had been searched for microphones.

Death camp: Auschwitz, where tens of thousands of slave labourers died working in a factory run by German firm I. G. Farben
There was a sharp intake of breath as he began to speak. German industry must realise that the war cannot be won, he declared. 'It must take steps in preparation for a post-war commercial campaign.' Such defeatist talk was treasonous - enough to earn a visit to the Gestapo's cellars, followed by a one-way trip to a concentration camp.
But Scheid had been given special licence to speak the truth – the future of the Reich was at stake. He ordered the industrialists to 'make contacts and alliances with foreign firms, but this must be done individually and without attracting any suspicion'.
The industrialists were to borrow substantial sums from foreign countries after the war.
They were especially to exploit the finances of those German firms that had already been used as fronts for economic penetration abroad, said Scheid, citing the American partners of the steel giant Krupp as well as Zeiss, Leica and the Hamburg-America Line shipping company.
But as most of the industrialists left the meeting, a handful were beckoned into another smaller gathering, presided over by Dr Bosse of the Armaments Ministry. There were secrets to be shared with the elite of the elite.
Bosse explained how, even though the Nazi Party had informed the industrialists that the war was lost, resistance against the Allies would continue until a guarantee of German unity could be obtained. He then laid out the secret three-stage strategy for the Fourth Reich.
In stage one, the industrialists were to 'prepare themselves to finance the Nazi Party, which would be forced to go underground as a Maquis', using the term for the French resistance.
Stage two would see the government allocating large sums to German industrialists to establish a 'secure post-war foundation in foreign countries', while 'existing financial reserves must be placed at the disposal of the party so that a strong German empire can be created after the defeat'.
In stage three, German businesses would set up a 'sleeper' network of agents abroad through front companies, which were to be covers for military research and intelligence, until the Nazis returned to power.
'The existence of these is to be known only by very few people in each industry and by chiefs of the Nazi Party,' Bosse announced.
'Each office will have a liaison agent with the party. As soon as the party becomes strong enough to re-establish its control over Germany, the industrialists will be paid for their effort and co-operation by concessions and orders.'
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