I still have to reply to some of the crap posted on this thread.
You should read this book
http://www.amazon.com/The-Chief-Culprit-Stalins-Design/dp/1591148065and if you don't want to bother then consider:
"In August, Stalin decided on an agreement with Hitler. A non-aggression pact with Germany assured the Soviet Union tangible advantages. The Soviets would recover eastern Poland, which had formerly belonged to Imperial Russia. The Germans pledged support in the USSR's claims on Bessarabia and agreed to define Eastern Europe's Baltic and Balkan states as belonging to the Soviet "sphere of interest."
Germany was preparing to invade Poland in case a territorial dispute and related grievances defied peaceful settlement. England and France supported Poland. Stalin reasoned that were he to conclude a military compact with the West, the powerful coalition would probably discourage Hitler from war.
A German-Soviet non-aggression pact, however, would give Hitler a free hand to invade Poland. England, as Poland's ally, would declare war on Germany, drag a reluctant France into the conflagration, and Italy would rush to Hitler's side. The Soviet formula for national security rested with aggravating the conflicting interests among the "imperialist" nations and maintaining neutrality as these states expended their resources in a prolonged struggle.
Stalin had defined the premise during his March 10, 1939, speech in Moscow:
Nonintervention represents the endeavor... to allow all the warmongers to sink deeply into the mire of warfare, to quietly urge them on. The result will be that they weaken and exhaust one another. Then... (we will) appear on the scene with fresh forces and step in, naturally "in the interest of peace," to dictate terms to the weakened belligerents.2
On August 23, 1939, the German foreign minister, Joachim von Ribbentrop, was in Moscow. He and Molotov signed the historic German-Soviet non-aggression pact. The following evening, Stalin hosted prominent members of the Soviet Political Bureau in his apartment. Among the dinner guests were Molotov, Voroshilov, Lavrenti P. Beria and Nikita Khrushchev.
Stalin explained, as Khrushchev later recalled, that he considered war with Germany unavoidable, but had momentarily tricked Hitler and bought time. The Soviet premier described the treaty with Germany as a game of "who outwits whom."3 He concluded that the Soviet Union held the advantage both morally and militarily. A few months later, the Soviet Foreign Office explained Stalin's decision in a telegram to its embassy in Tokyo: "The ratifying of our treaty with Germany was dictated by the need for a war in Europe."4
On August 25, 1939, the Swiss periodical Revue de droit international published the text of a speech Stalin delivered on August 19 to a closed session of the Political Bureau in Moscow. He was quoted as follows:
It must be our objective that Germany wage war long enough to exhaust England and France so much that they cannot defeat Germany alone.... Should Germany win, it will itself be so weakened that it won't be able to wage war against us for 10 years.... It's paramount for us that this war continues as long as possible, until both sides are worn out.5
In November, Stalin responded in Pravda that the Swiss article was a "heap of lies."6 (The Russian researcher T. S. Bushuyevoy discovered Stalin's original text in the former Soviet archives in 1994; it conformed to the Swiss version.)
The Soviets seized a generous portion of Eastern Europe only days before France's surrender. In September and October 1939, the Soviet government had negotiated permission with Lithuania, Latvia and Estonia to establish military bases at their Baltic ports. In June 1940, Molotov reproached the Lithuanian prime minister, Anastas Merkys, for the alleged poor security provided the Soviet garrison; a Red Army soldier had supposedly been bushwhacked. On June 14, Molotov presented Lithuania's foreign minister with an ultimatum demanding reinforcement of the Soviet military contingent to prevent further "provocation." The diminutive republic acquiesced.
Similar ultimatums were presented to Latvia and Estonia. On the 21st, the Baltic states were declared Soviet republics, following sham elections. Molotov told the Lithuanian foreign minister on June 30, "Now we're convinced more than ever that the brilliant comrade Lenin was not wrong in asserting that World War II will bring us to power in Europe, just as World War I helped us to power in Russia."11
When Moscow presented its demand on June 23 to reoccupy Bessarabia, the formerly Russian eastern province of Romania, Ribbentrop pledged Germany's support. He asked only that the sovereignty of Romania's remaining territory be respected, to safeguard the Reich's economic interests.
Apologists for the USSR, and they abound among historians and sociologists in democratic countries, excuse these Soviet land grabs as defensive measures. The threat of potential German aggression supposedly compelled Moscow to extend the USSR's frontiers to blunt the impetus of a German offensive. The premise ignores the fact that the Soviet operations in the Baltic and into Bessarabia occurred opposite a virtually undefended German border. Four German infantry divisions and six militia divisions protected the demarcation line shared with the Soviet Union. Two were transferred to the western front in June."
http://www.wintersonnenwende.com/scriptorium/english/archives/articles/stalwarplans.htmlThese works simply confirm what I learned years ago in College about Stalin. There are many works that reveal the truth if one actually cares to learn the truth.