yeah, its my mistake. the rulebook says that the US gets their 40 ipc boost in the turn after a japanse attack on a allied territory. China is not included
The sea zone is hostile. The transport must leave the sea zone in combat movement, unless other US units attack the destroyers. In any case, no units may be loaded there.
I think if your ship ends up in an enemy convoy zone and survives to their collect income phase it automatically deducts from their total, so that being said I believe you can attack to an enemy sea zone assuming you kill something or noncombat to one. The convoy raiding takes place on the opponents collect income phase so its entirely different from your combat.
If you destroy 12 IPCs as Japan the US is down to 38 or so. If Japan keeps up with the US Navy builds it seems like that would keep the Japanese on a pretty even playing field with the US.
