The 1931 extension of the Berlin Treaty was ratified in Germany on May 5.[1] In August 1933, Molotov assured German ambassador Herbert von Dirksen that Soviet-German relations would depend exclusively on the attitude of Germany towards the Soviet Union.[45] However, Reichswehr access to the three military training and testing sites (Lipetsk, Kama, and Tomka) was abruptly terminated by the Soviet Union in August–September 1933.[37] Political understanding between the Soviet Union and Nazi Germany was finally broken by the German-Polish Non-Aggression Pact of January 26, 1934 between Nazi Germany and the Second Polish Republic.[46]