Stalin 's order that the German Communist party must never again vote with the Social Democrats coincided with his agreement , in December 1928 , with what was termed the ' Union of Industrialists ' . Under this agreement the Union of Industrialists agreed to provide the Soviet Union with an up-to-date armaments industry and the industrial base to support it , on two conditions : Firstly , they required paying in hard currency , not in worthless Soviet rubles . Stalin desperately wanted their weapons , including anti-aircraft guns , howitzers , anti-tank guns , machine guns etc. , but he was critically short of money . As Russia had been a major wheat exporter before the First World War , he decided to expel his recalcitrant kulak peasant farmers to the wastes of Siberia and create huge collective farms on their land like the 50,000 hectare farm that Krupp had created in the North Caucasus . Thus , in 1930 and 1931 , a huge deluge of Soviet wheat at slave labour prices flooded unsuspecting world markets , where surpluses already prevailed , thereby causing poverty and distress to North American farmers . However , Stalin secured the precious foreign currency to pay for German armaments
expel his recalcitrant kulak peasant farmers
Dekulakization
Germany–Soviet Union relations, 1918–1941