The US Embargo on Japan had the explicit intent on weakening the Japanese economy in order to facilitate future military action. Japan attacked in no small part because they thought that if military confrontation would be inevitable, then would be the only chance where victory was possible.

There were certainly teacher who would say the last one not even that long ago. It's unacceptable practically nowadays because of wokeness.

And yes, that is ideology. Actually, thats almost exactly the essence of ideology. Worldview!=Ideology.