After the tragedy of the First World War, it seemed that Europe, having washed itself with blood, had developed reliable immunity from militarism, aggression and military adventures. However, only two decades passed - and humanity was plunged into hell by the even more terrible and bloody Second World War. How could this happen? Why has Europe “stepped on the same rake” again? Why was the truce so short? And can the period of the 1920-1930s be called peaceful - an era of severe economic crisis, civil wars and mass unrest? Or was it the long, painful agony of the Old World?..Read the NEW book by a popular historian - a continuation of the bestseller “The Worst Russian Tragedy”, an unexpected look at the Apocalypse of the 20th century.