Naturally neither one nor the other took any notice of evaluated intelligence. They both demanded that the intelligence material should be laid before them 'grey' and unevaluated: they would then draw their own conclusions and analyse the material on the basis of Marxist doctrine. But Marxism had very precisely and categorically foretold that there would be a world war in Europe which would be the last war of mankind. The imperialist war would develop into a worldwide revolution, after which a golden age would begin. Yet the war had finished two years before and no worldwide revolution had happened. Intelligence reported that there were no signs of this revolution coming about, so both Lenin and Trotsky were either compelled to admit that Marxism was wrong or to take measures to bring the revolution about. They decided to trigger off a revolution in Europe, starting with Poland. Intelligence assessments were ignored, and naturally the adventure ended in complete failure. Both the organisers immediately started to hunt for a scapegoat. The only possible explanation for the scandal was that the intelligence service had done its work badly. Lenin announced to the rank and file of the Party, 'We have suffered this defeat as a result of the negligence of the intelligence service.' But the GRU was a completely unknown entity, even to some of the highest representatives of the Soviet bureaucracy, and much more so to the rank-and-file Party members. All eyes turned towards the Tchekists. Their unpopularity among the people, even before this, was evident. After Lenin's announcement their authority finally fell. Dzerzhinsky caused a scandal in the Kremlin and demanded explanations from the Politburo. In order to calm the Tchekists and to support his own version of the story, Lenin permitted the Tchekists to purge the GRU. The first bloody purge took place in November 1920. On Lenin's orders hundreds of intelligence officers who had allegedly failed to evaluate the situation correctly were shot.