User blog comment:Fegaxeyl/No US superpower - but how?/@comment-32656-20110801172704/@comment-1187803-20110802113328

If the USA had to invade Japan it might also have found itself trapped in a war in China as well. If so the huge attrition of US resources and manpower might have led to the USA firstly pulling out of Europe with huge internal discontent due to them losing so many soldiers. This would lead to the USSR having a free hand in Europe and a possible collapse of the USA leaving the USSR on its own