To listen to official historians, Stalin’s behavior on the eve of the war was complete madness, not to say suicide. Intelligence is literally screaming about Hitler's imminent attack, German planes are constantly violating the border, the concentration of enemy troops has been revealed at our borders, the generals are begging to put the troops on combat readiness - but Stalin refuses to take action to the last, dooming the Red Army to a terrible defeat and putting the USSR on the brink of complete collapse... But the Kremlin tyrant was neither crazy nor suicidal! Why did he hesitate so long? Why weren't you afraid of Hitler's attack? Yes, because he had the highest trump card up his sleeve and was absolutely confident that he could stop the German invasion, even if the Fuhrer decided to launch a pre-emptive strike! What was this trump card? What was Stalin's belief in his own invulnerability based on? What surprise did he prepare for his “possessed” ally? And why, contrary to expectations, was this “unkillable” card beaten? Based on the discoveries of Viktor Suvorov and developing his ideas, this sensational book unravels the main mystery of the Second World War and gives a convincing answer to the “damned” questions that historians have been struggling with for more than half a century!