Original sentence: Germany, wanted to.However, when Soviets invaded Poland on Sep 17 1939, Polish army and society looked forward for their help in the struggle against Nazis.In an attempt to prepare for reappeasement with Nazis, Soviet's First Secretary Joseph Stalin had already in April opened for negotiations and improved relations with Germany by replacing the Jewish Foreign Minister Maxim Litvinov with Molotov.It is obvious, that all the 3 sides tried to manouver others to the less comfortable situation.It was expected, that autumn rains in Poland would make tanks useless, so the agreement must have been concluded as fast as possible.Litvinov was not credible enough to lead Soviet Union towards agreement with Nazi Germany and could have been perceived as an advocate of an alliance with the Western democracies against the Fascist powers.Otherwise, the war could have been avoided.Stalin obviously intended for Molotov program of provoking the war between Germany and Western countries.The experience from the Spanish Civil War, showed that Soviet offers of support usually lead to situations, when pro-Soviet fraction tries to seize power in the country
Edited sentence: Following the Spanish Civil War, this experience added to Soviet perceptions that the western powers were not serious in opposing aggression.In an attempt to forestall such a lone resistance to Nazi aggression to the east, Soviet's First Secretary Joseph Stalin had already in April opened for negotiations and improved relations with Germany by replacing the Jewish Foreign Minister Maxim Litvinov with Molotov.Litvinov's line, as an advocate of an alliance with the Western democracies against the Fascist powers, seemed less feasible than Molotov's program of buying time to get the Soviet Union ready for war