11th Feb 1940 the USSR & Nazi Germany signed the German-Soviet Commercial Agreement..

11th February 1940 the USSR & Nazi Germany signed the German-Soviet Commercial Agreement under which provided the Nazis raw materials for their war machine.

MEMORANDUM ON THE GERMAN-SOVIET COMMERCIAL AGREEMENT SIGNED ON FEBRUARY 11, 1940

https://avalon.law.yale.edu/20th_century/ns120.asp