IS IT TRUE THAT IF JAPAN ATTACKS THE DEI’S ON TURN’S ONE OR TWO THE USA AUTOMATICALLY ENTERS THE WAR?
IF SO, THEN IS NOT JAPAN’S BEST OPTION TO JUST BUILD TRANSPORTS AND NAVAL UNITS AND POSITION ITSELF UNTIL TURN 3 OR 4 BEFORE IT UNLAODS AGAINST DEI, UK, AND AMERICA?
It is not true that the USA “automatically” enters the war.
It is true that it ALLOWS the USA to declare war on the following US turn, which it WILL do in order to collect its income bonuses. But it’s not automatic.
Unless the UK or Anzac declared war on Japan first, or in case they moved a unit into china (which requires a declaration of war against Japan as well).
As for best option, that depends ENTIRELY on the board conditions: If the UK leaves vital naval assets vulnerable or spreads itself thin, then, no, it might actually be better to attack early. Also, J3 is really the last chance to declare war as the US will collect income on US3 regardless, so there’s usually absolutely no reason not to declare war on the US on J3 unless the US is positioning naval assets, depending on Japan to declare war on the US and therefore be blocked by US units. Otherwise, J4 is usually too late.