read this.

At Yalta, Roosevelt and Churchill discussed with Stalin the conditions under which the Soviet Union would enter the war against Japan and all three agreed that, in exchange for potentially crucial Soviet participation in the Pacific theater, the Soviets would be granted a sphere of influence in Manchuria following Japan’s surrender. This included the southern portion of Sakhalin, a lease at Port Arthur (now Lüshunkou), a share in the operation of the Manchurian railroads, and the Kurile Islands.

https://history.state.gov/milestones/1937-1945/yalta-conf

所有跟帖： 

• 一個原因是為了蘇聯出讓一些在歐洲的地盤。 -chufang- ♀ (0 bytes) () 01/03/2024 postreply 08:20:48

• 比如說，250萬蘇軍攻打柏林犧牲30萬人，盟軍在易北河邊按兵不動看熱鬧。然後蘇聯把柏林的3/4分給了盟軍。 -老生常談12- ♂ (0 bytes) () 01/03/2024 postreply 15:38:34