> because they knew the US would come after their empire at some point.
This makes it sound as if the US only acted to end competition against another Empire. Japan invaded numerous territories for access to resources and committed horrible atrocities while doing so.
The attack on Pearl Harbour may have been preemptive but the only reason for Japan to fear attack from others was due to actions of the Japanese.
> This makes it sound as if the US only acted to end competition against another Empire.
Well, that might well have been the case. While World War Ⅱ did put a stop to some horrible things, I don't know if that was because they were horrible or merely because their perpetrators were a threat. I suspect the latter.
This makes it sound as if the US only acted to end competition against another Empire. Japan invaded numerous territories for access to resources and committed horrible atrocities while doing so.
The attack on Pearl Harbour may have been preemptive but the only reason for Japan to fear attack from others was due to actions of the Japanese.