Historical documents newly released by Russia’s Ministry of Foreign Affairs show that the Soviet Union decided to sign the Ribbentrop-Molotov Pact with Nazi Germany for two reasons: the aggressive foreign policy of Poland, which prevented a Soviet alliance with France and the United Kingdom, and fears of an eventual Polish-German military alliance that would pose a really serious threat to the USSR.
No documentary evidence is provided to support the affirmation and no dates are given to allow even the most superficial background check. This is part of Russian efforts of historical revisionism, in order to portray Russia’s role in World War II as a non-aggressive power and Poland as one of the main culprits of the conflict.
In terms of the Molotov-Ribbentrop Pact, it is a proven historical fact that it contained the Secret Supplementary Protocol, which assumed the division of Poland and other Eastern European countries between the USSR and Germany. Thus, the signing of the Molotov-Ribbentrop Pact led to German and Soviet military aggression against Poland in September 1939, which resulted in its complete occupation by Germany and the USSR.