Thanks for your help. Well, it's the old adage "RTM". I found it finally in the manual -- I didn't want to give up the game I'd invested a lot of time in, so ended up having Japan declaring war in August 1942. By that time there was a lot of US airpower ready to be deployed, and getting to the Dutch East Indies has eluded my IJN forces. The good news is that Italians have captured Cairo, the Germans have driven the Soviet capitol to Sverdlovsk and IJN ground forces are closing on Chungking. I will have to raise the difficulty level all the way next time.