I've been thinking about writing a Polish-Soviet War in which Trotsky manages to win the Battle of Warsaw despite Stalin's refusal to send troops northwards. Stalin still loses the Battle of Lviv, humiliating and discrediting him in the eyes of the rest of the Bolsheviks even more than OTL, as he is compared to Trotsky's victory at Warsaw. The Poles are forced to sue for peace and the USSR manages to regain most of Russia's prewar Polish territory, leaving a rump, revanchist, and rightist Polish state highly dependent on Germany. Stalin eventually resigns his government posts in disgrace and returns to Georgia, where he dies of influenza later in the year, leaving a nearly-democratic USSR ruled by a herd-of-cats committee with a far-superior officer corps and army to OTL, while collectivization and industrialization proceed at a much slower pace. Meanwhile, in the West, Red Terror surges at an alarming rate, leading to an Entente attempt to strengthen Germany as a bulwark against the Soviets. Nonetheless, the USSR manages to inspire several communist revolutions, both failed and successful in Europe's colonial empires and on the continent itself, leading to waves of revolution and revanchism. Finally, as tensions rise throughout the world, the US commits itself to an ever-deepening isolationism, leaving Europe alone against the rising tide of communism.
The title (taken from DirtyCommie with his permission) would be Can You Hear The Thunder?