The non-aggression pact between Germany and the Soviet Union.
The German-Soviet Non-aggression Pact was also called Nazi-soviet Non-aggression Pact, German-soviet Treaty Of Non-aggression, Hitler-Stalin Pact, or the Molotov-Ribbentrop Pact. It was signed in 1939 and was a non aggression pact between Germany and the Soviet Union that was signed a few days before the beginning of World War II. It divided eastern Europe into German and Soviet spheres of influence. Answer: The division of Poland between Germany and the Soviet Union
That was Germany's Minister of Foreign Affairs, Von Ribbentrop.
To invade Poland; to prevent a war with the Soviet Union in 1939. (The Soviets fought the Germans from 1941-1945). It might be better asked as to why the Soviet Union signed Russian-German Non-Aggression Pact, in that the pact was a German proposal.
The bear
The German-Soviet Non-Aggression Pact was broken when Germany invaded the USSR in 1941. Hitler used the code name of Barbarossa for the invasion of the USSR.
France and Britain responded to Germany's initial aggression by adopting a policy of appeasement. Neither country wanted to start a war.
That Germany will get the western part of Poland (Russian territory), Russia will get the Eastern half and Germany promises not to invade Russia.
It was exactly how it sounds. The germans and the soviets promised to be non aggressive towards each other. (Germany subsiquintly broke this pact) The true purpose of the Soviet-German Non Aggression Pact was to allow each country to not be concerned with war between the two nations. It was also a plan to divide Poland in half. One half to the USSR, the other to Germany.
Writing in exile, former Soviet leader, Leon Trotsky was against the German-Soviet Non-Aggression Pact of 1939. Trotsky hated fascism, the government of Nazi Germany, and he hated the false socialism of the USSR, a dictatorship of Joseph Stalin. Trotsky believed that based on any token of friendship between these two nations would end any hope of a true socialist state in the USSR.
In September of 1939 Germany and the Soviet Union invaded and divided Poland among themselves. This was one of the secret clauses in the Soviet German Non Aggression Pact.
In the late 1930's Stalin believed that the German - Soviet Non aggression Pact would protect the Soviet Union from an invasion by Germany.