This proves the point that merely standing up to Stalin, who demanded the arrival of several Lend Lease convoys even after the war had ended to help alleviate exactly what you are describing, might have kept the Russians from forming the Warsaw Pact and allowing the Iron Curtain to descend by forcing them to withdraw behind their own borders.
Or, did the Eastern European countries like being occupied by Soviets and having that Wall running through the middle of Berlin?
@Herbert West might remind you about Soviet tanks in Hungary when they tried to proclaim freedom for themselves; if he is unwilling then try Milan Kundera and the Prague Spring. Or Lech Walesa, Karol Wojtyla, and those miners trapped by the Soviets underground. And if you don't want to leave Mother Russia, try Solzhenitzen.
No one said a war is required, just meet chutzpah with chutzpah; they rattle a saber, you rattle a saber. Merely having someone at the negotiating table who isn't mere weeks away from death would have been a great place to start, and his successor proved to be a very poor choice indeed.