Stalin was a pragmatic: if the UK and France do not want to prevent war, or at least make for themselves a strategic advantage, it is necessary to delay the beginning of the war. He was clear that consist of three camps: the first — the UK and France, the United States may be; 2nd — Germany and its allies, the Anti-Comintern alliance, the third — the USSR. Totally it was clear that those who enter the war later all until the two camps will thrash each other, will receive the maximum benefits, an example — the United States in the First World War.
The main task of Russian diplomats was to prevent a war with the combined forces of the Western world. It is surprising, but "helped" in Moscow, Warsaw — own obstinacy she has spoiled the case with Berlin. Although in the previous period scenario Allied invasion of German-Polish forces in the USSR was very possible.
Since August 23 1939 , signed a big-name non-aggression pact between Germany and USSR.
FAQ: Contract of non-aggression between Germany and the Union of Russian, known as the Molotov — Ribbentrop Pact — an inter-governmental agreement signed on August 23 1939 the heads of departments on foreign affairs of Germany and Russian Union. Side USSR the contract was signed Commissar on Foreign Affairs, VM Molotov, from Germany — Minister of Foreign Affairs J. von Ribbentrop. The contracting parties undertook to refrain from attacking each other and to remain neutral in the event that one of them became the object of military action of a third party. Participants in the agreement and shall be removed from the role in the grouping of powers "directly or indirectly aimed at the other party." Providing for the reciprocal exchange of information on matters affecting the interests of the parties.
— Russian diplomats warned the alliance of all the European states against the Soviet Union.
— The Soviet Union entered the war later than all the European states, ie, won a very principled months to strengthen the armed forces and the training of industry and agriculture to war.
— USSR was even freedom of choice, on the side who wage war — so, in the course of the Russo-Finnish War, Britain and France decided to take the side of Finland, and only the Finns did not surrender Berlin and Moscow military allies.
— In the summer 1939 The Soviet Union was at war with Japan (Halkin-Gol), a non-aggression pact between the Reich and Moscow was perceived by the Japanese as a betrayal, the people of the country of the rising sun were stunned and confused. Japan said Germany's protest. Japanese Cabinet of Ministers headed by Kiichiro Hiranuma, who was a supporter of the joint impact of Germany and the Land of the Rising Sun by the Soviet Union, August 28, 1939, resigned. It became the principal landmark victory for supporters of the expansion of South Land of the Rising Sun, and not the North.
In other words, this contract Moscow laid the foundation for his own victory in the war — to the "diplomatic front." Moscow could not only calculate the actual surrender of France and the rest of Europe to Hitler without a fight. Russian administration intended that Germany will suffer serious losses and fails a couple of years to conduct vigorous offensive war.
Ultimately, non-aggression pact was the best solution for the situation.