aug 23, 1939 - Ribbentrop-Molotov Agreement.

Description:

The Communist Soviet Union and Nazi Germany were constantly viewed as enemies of each other. The Soviet Union was also signed to defense alliances with Poland, Czechoslovakia and many of Germany's potential enemies - the "Ribbentrop-Molotov" agreement signed on August 23, 1939 - on the eve of World War II - where received as a huge surprise in the world.