I am a science major so I am pretty useless when it comes to history; hopefully you can enlighten me a little.

I was doing some reading about the Tripartite Pact that Hitler had signed with Japan and Italy, and it made me wonder: if Hitler wanted to restore the Aryan race, what would his plans be for other non-Aryan populations such as Japan? I am mainly curious in this because if they had this signed alliance with these nations (and unofficially with others), was Hitler preparing to betray them and shift the war effort against those countries (even though they were allies at one point)?