I don't know if there have been any T/Ls. about this:
But just wondering if Japan rejected Yamamoto's advice and went for the raw material rich areas of British and Dutch Territories?
Whilst, Churchill was reassured by FDR that they would be supported, and there were some liaisons between USN & RN - but what would it be in reality? Moreover, if the USN did get in harms way guns blazing - would FDR be 'under fire' politically for getting involved in a foreign war!?
Could the USN be obliged to 'get out of the way' to avoid any 'provocation'?
How long could Japan get a free run before the US decided enough was enough? And how much more territory could Japan have secured before then?