They missed the breakaway Azerbaijani Peoples Government, and Kurdish Republic of Mahabad in Iran. The left Iranian border should have been shifted downward.
If you want to go deeper, you can say that in this timeline the USSR would have likely rescinded the Percentage Agreements and incorporated Greece.
Also… Japan? Korea and Manchuria you can make an argument for sure, but the main Japanese islands? How?
Part of the (alleged) reason we dropped the bombs on Hiroshima and Nagasaki was to prevent the USSR from entering the pacific theater and muscling in on post-war Japan. I have to assume they’re referring to that.
Yes, but the plan was at most the invasion of Hokkaido, with the British and Americans invading Honshu, Kyushu, and Shikoku. Even that was considered an insane long shot since the Soviet Pacific Navy was unsure if it could undertake such an operation. Most attention was focused on Manchuria.