What does Japan do? Presumably, they'd turn their carrier force, along with land-based aircraft against the British instead of the US, and then go after the DEI and their oil and resources, all in the hope that the US will sit idle. But, then what does the US do? Nothing? Without Pearl Harbour, can FDR get Congress to declare war on Japan? If not, does the US at least fortify, prepare and mobilize their positions in the Pacific?
If Japan does not take on the US soon, the US will grow in power to the point that even the Japanese high command will worry. The building of the first three Essex class carriers (Essex, Bunker Hill and Lexington) are already well underway by December 1941, with two more being laid down that same month (Yorktown and Intrepid), with a build time of about 16 months per ship from laying down to commissioning into the fleet.
With Sommerville and the BEF at Singapore in early December 1941, what is Japan's next move?
