The Soviet Union abandoned Internationalism in all but name when Stalin won his power struggle with Trotsky.
Stalin advocated “socialism in one country”, and the Soviet Union became very nationalistic. The Soviets goals were more imperialistic than trying to export a world revolution.
Not exactly.
Stalin went to “socialism in one country” because he believed, accurately, that the world was not ripe for universal revolution, not because he decided that universal revolution was no longer the goal.
So he concentrated on making the Soviet Union a solid base for the future world revolution, not abandoning the goal but moving it into the future.