From a Marxist perspective, UK, USA, France etc had the same class interests as Nazi Germany. They were also uncomfortably okay with the Nazis Pre-war. I know this is a big topic (and I’m sure some marxist books have been written on it) but briefly why did the Allies fight against Nazi Germany from a dialectical pov.
Pacific theater was purely classic imperialist war for redividing the colonial spoils - on both sides - Japan i don’t think i have to comment because it’s obvious. Then enters US which for decades had imperialist ambitions about east Asia which we can easily see since they already had many island colonies, not to mention brutal subjugation and genocide in Philippines. So, in 1941 Japan was already streched thin by their (purely imperialist) war in China. Most importantly, their strategic resources were on the very shaky ground - they basically were importing them from the competing imperial powers. USA started embargo on Japan, supported by the european colonialist powers and Japan was standing before a hard choice: either immediate retreat from China and most likely losing their entire colonial empire (with obvious perspective of being colonized immediately by the US), or go va banque and take what they need by war. So the war was not really this stupid as bourgeoisie historians always say, it was rational but desperate, since the alternative was basically complete surrender and colonization - which they were trying to actively avoid for a century and which did happened after their lost as we all know.
Overall, while not justifying Japan and especially all its atrocities, Pacific War was caused by the US as the inter-imperialist war.
deleted by creator