What if Trotsky was the leader of the Soviet Union?

{Trotskyist USSR}Leon Trotsky prevails in the power struggle following Lenin’s death, outmaneuvering (or at least, out-lucking) Stalin and becoming leader of the Soviet Union. Far from the martyred exile he was IOTL, the Trotsky who takes over here is anything but a victim, setting fires across the continent as he incites a “World Revolution!” to overthrow the capitalist powers and terrorize the bourgeoise into submission. Naturally, this means bankrolling far-left terrorists and the armed wings of communist parties throughout Europe in thousand-fold reprises of the Spartacus Uprising or Revolutionary Catalonia, with conservative/reactionary crackdowns not far behind as the Francos, Mussolinis, and (worst of all!) Hitlers of Europe crush the uprisings and restore the “law and order” that the liberal democracies failed to affirm. Simultaneously, the USSR itself—not content to simply arm and sponsor workers’ revolts and proletariat supremacy abroad—rolls into Eastern and Central Europe to assist its comrades in Poland, Finland, and their assorted neighbors. All in all, an orgy of border-gore and internal conflict that pairs off a continent-spanning Spanish Civil War in the West with the Red Army launching a reverse Barbarossa from the East, turning the Second Great War from a sequel to the first into a chaotic, pan-European bloodbath all its own.