The story told by this book, is that the marriage of convenience between the United States and Britain on the one hand, and secondly USSR; the author focuses his story on the period 1941-1945, from the time when Germany broke the pact that bound to Stalin. For a brief, intense and crucial moment, the two most powerful democracies of the planet forged an alliance with the Muscovite dictator. Alliance will require some snakes to swallow, or swallow do to others (include Poland) The book is didactic, written in an accessible English; it portrays finesse protagonists (Stalin, Churchill, Roosevelt) and replace with relevant events in context. On a sober tone, it also draws up an indictment against a monstrous totalitarian regime, while recalling that the West has condoned the deportations and massacres Katyn first. Was there another way to secure Moscow's support in the war against the Nazis? All indications are not, and this tragic discovery of the contemporary reader wonders about the fragility of our ideals.