This one's a doozy I know, but I have enough confidence in the board's creativity to not immediately put it in the ASBs pile.
So: with a point of divergence sometime in the 20th century (after the October Revolution if possible, before the turn of the century if necessary), make it so that the United States is no longer willing or able to contain the Soviet Union and concedes to it military hegemony outside the Americas.
The USSR's victory won't be as complete as the US's OTL victory, of course. The United States will not collapse, and will probably retain an edge over Russia at sea.
The main impediments are the horrid flaws in Marxist-Leninist systems, and the unreal power of the United States. Still, China has managed to make a Communist political system work with liberal economic reforms. Perhaps a more extensive New Economic Policy, followed by someone besides Stalin succeeding Lenin (Bukharin?) After that, butterflies in *World War II allow the Red Army to sweep down through continental Europe before Allied troops land at Normandy. USSR troops may also reach Manchuria and Korea while they're still in Japanese hands. Butterflies may let them put a friendly or puppet regime in Beijing if, for instance, Mao does not survive Chiang's purges and the Comintern masterminds China's revolution.
The United States' reaction to these events will need to be counterproductive. Perhaps the *Korean War, *Second Indochina War or analogue(s) hurt the U.S. more than they do in OTL. The US could become more authoritarian as the USSR becomes less so. USSR's influence in oil-rich regions grows. Left-wing elements of "first world" nations call for an end to the arms race. Britain moves towards neutrality as its people sour to the somewhat dystopian society it has become after decades of fear from Communist invasion. Neo-isolationist and leftist elements in the United States tire of the standoff and call for a return to the days of the Monroe Doctrine.
Does this scenario, implausible as it seems, have any truth to it? Is there a better way, or no way, to make something like it come true? Could It Happen Here?
So: with a point of divergence sometime in the 20th century (after the October Revolution if possible, before the turn of the century if necessary), make it so that the United States is no longer willing or able to contain the Soviet Union and concedes to it military hegemony outside the Americas.
The USSR's victory won't be as complete as the US's OTL victory, of course. The United States will not collapse, and will probably retain an edge over Russia at sea.
The main impediments are the horrid flaws in Marxist-Leninist systems, and the unreal power of the United States. Still, China has managed to make a Communist political system work with liberal economic reforms. Perhaps a more extensive New Economic Policy, followed by someone besides Stalin succeeding Lenin (Bukharin?) After that, butterflies in *World War II allow the Red Army to sweep down through continental Europe before Allied troops land at Normandy. USSR troops may also reach Manchuria and Korea while they're still in Japanese hands. Butterflies may let them put a friendly or puppet regime in Beijing if, for instance, Mao does not survive Chiang's purges and the Comintern masterminds China's revolution.
The United States' reaction to these events will need to be counterproductive. Perhaps the *Korean War, *Second Indochina War or analogue(s) hurt the U.S. more than they do in OTL. The US could become more authoritarian as the USSR becomes less so. USSR's influence in oil-rich regions grows. Left-wing elements of "first world" nations call for an end to the arms race. Britain moves towards neutrality as its people sour to the somewhat dystopian society it has become after decades of fear from Communist invasion. Neo-isolationist and leftist elements in the United States tire of the standoff and call for a return to the days of the Monroe Doctrine.
Does this scenario, implausible as it seems, have any truth to it? Is there a better way, or no way, to make something like it come true? Could It Happen Here?