Aretaku,
In a word, “suicide”…America has too much economic power for Japan to be able to directly invade. Any roundabout route, such as Alaska or Central America, would give them too much time to prepare militarily.
Without Japan’s invasion of Asia to deplete Russian IPC’s, England and Russia could at least hold their own against Germany. They might even win, if England could set up a good shuck for reinforcements in Norway, Karalia, or Archangel.
Left alone, England could set up a stable and defensable IC in India and take control the Asian east coast, threatening Japan with invasion and/or SBR losses.
England could defend Africa with Russia’s help through Persia and TransJordan, because after a few skirmishes Germany would run short of infantry at the front, giving Russia time to build reinforcements with England’s aid.
Not a promising outlook for the Axis powers.