I don't have to prove anything to you. There's plenty of information out there about this stuff. Do your own research.
I'll even get you started: The Japanese military, deeply engaged in the seemingly endless war it had started against China in mid-1937, badly needed oil and other raw materials. Commercial access to these was gradually curtailed as the conquests continued. In July 1941 the Western powers effectively halted trade with Japan. From then on, as the desperate Japanese schemed to seize the oil and mineral-rich East Indies and Southeast Asia, a Pacific war was virtually inevitable.
Oil runs the world. Countries fight for it. Sometimes they admit it, most times they don't.
Global Policy.org