the soviets declared war on japan on august 9, 1945.
the soviets declared war on japan on august 9, 1945.
when did the soviets declared war on japan?
august 9 , 1945
on august 9, 1945, stalin, based on a secret agreement at the yalta conference in february, unilaterally abrogated the ussr's neutrality treaty with japan (1941) and declared war on japan on august 9, 1945, beginning the soviet–japanese war. the soviets invaded manchuria on three fronts. 









































the potsdam declaration was intended from the start to serve as legal basis for handling japan after the war. following the surrender of the japanese government and the landing of general mcarthur in japan in september 1945, the potsdam declaration served as legal basis for occupation reforms.









































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potsdam declaration
in early october 1944, the commanders of military forces in the soviet far east arrived in moscow to begin staff talks with general john deanne of the u.s. military mission. at the same time, stalin informed harriman that soviet entry into the war against japan would require american approval of certain political conditions about the future of manchuria, a point about which he did not elaborate upon. on 14 december 1944, stalin spelled out to harriman what these political conditions were, namely that the soviet union be allowed to lease the chinese eastern railroad and the ports on the liaotung peninsula and for china to recognize the independence of outer mongolia. in a thinly veiled threat, stalin boasted to harriman that the flat open plains of manchuria and northern china were the perfect country for soviet combined arms operations, expressing much confidence that the red army would have no difficulty defeating the kwantung army and that all of northern china would be under soviet control once the soviets declared war on japan. essentially, stalin was saying the soviets would take whatever they wanted in china, regardless if they had an agreement with the united states or not.
w. averell harriman