You realize the US/UK/Dutch started that embargo because the fucking Japanese had already at that point killed over 250,000 Chinese citizens/military personnel in China right? Battle of Shanghai ring a bell? no? we just cut them off for no reason other then to provoke them? right...if Japan knew they couldn't defeat America then why bomb them in the first place?
Edit, oh yeah I also forgot about Nanking, yeah that had already happened by the time the embargo took place so chuck another 40,000-300,000 deaths on top of the 250,000 from Shanghai