It incurs immediate massive costs and risks, but does so at a time and place when the Japanese think, perhaps correctly, that they have the best possible chance of overcoming those costs and risks to achieve their goals. Waiting and seeing means letting the United States choose when to attack...
Not at all. If Japan attacks Britain and the Netherlands in 1941, but not the US, that does not mean Japan can
never strike first against the US. Any US action against Japan must be preceded by a long period of US preparations. If the President is an isolationist, there must be a change in US leadership. Congress must appropriate billion$ for military and naval bases in the Philippines, equipment for the Philippine armed forces, and expansion of US forces. The bases must be built, Filipino soldiers must be recruited and trained, and US forces deployed to the Philippines. None of this can happen overnight or in secret.
To be fair, some of it was already happening in 1940: notably, the Two-Ocean Navy Act. But nothing that actually threatened Japan was possible for years -
unless Japan goaded the US into immediate all-out action by attacking the US. OTL, crypto-interventionist FDR created enough of a threat to provoke Japan to attack the US. If FDR is succeeded by an isolationist in 1941, there will be no such provocation.
Japan could execute the Southern Operation, rout the Royal Navy, occupy New Caledonia and Fiji, and neutralize Australia. with no risk of US intervention. If the US later changed policy and began preparing for intervention,
then Japan could strike the US - from a far stronger position.
I would also take exception to the "not probable" comment. In fact the assumption you have been making throughout this discussion is that Wheeler is in office when Japan is making these decisions, which seems like an odd assumption to me. The comments bringing up Wheeler specified that he was elected in 1932, so he would have hit the two-term limit in 1940,
This thread has become somewhat garbled on this point, and I (unwittingly) contributed. The first post mentioning Wheeler was
Had there been a President Wheeler/Taft/Vandenburg/Dewey, the UK would almost certainly have lost and the USSR would have become Eastern Germany...
Orser subsequently made posts to this thread which actually referred to another thread:
President Burton K. Wheeler in charge of an isolationist US during WWII
which he had started at the same time. In that thread, the OP had Wheeler elected VP in 1932 (not with FDR) and President in 1936. I posted in this thread, thinking of the other thread, which I had also read (but don't consider very plausible).
My thought, which I never clearly expressed, was that Wheeler could be elected in 1940. He he formed a campaign committee and was ready to announce as soon as FDR was out. Neither Garner or Farley had a real chance of being nominated, IMO, and I don't know of anyone else who was prepared to move. If FDR had a health crisis that happened or was disclosed just before the convention, the nomination would be up for grabs, and IMO Wheeler could have a good shot at it.
Willkie was already the Republican nominee, and there are reasons to think his candidacy was doomed. (Robert Heinlein wrote that Willkie more or less self-destructed.)
So Wheeler could have been President in 1941-1945, which would be a major change and IMO would make Allied victory close to impossible.
Acting against the Philippines at all is predicated on the Japanese attacking southwards into the Dutch East Indies and Malaya. Which requires France to have fallen. Which means that Wheeler is most likely out of office.
Not if he is elected in 1940.
I'm not sure why you're constantly talking about what Wheeler might or might not do when he isn't likely to even be in office anymore by the relevant times.
There's no particular reason to think he would have been President at any other time. He made plans to run in 1940, but not in any other year.
Even a more isolationist United States will likely be building up powerful naval forces that they could move to the Philippines, in principle. You can repeat "but it will take several years" and "but the Philippines will become independent" until you're blue in the face, but if you are a Japanese strategic planner considering the situation this looks exactly like the kind of situation where a preemptive strike is handy.
They certainly can, but this indicates nothing about the actual effectiveness of the forces. They have to assume that the soldiers in question will be able to fight effectually and effectively with what they have.
They know that the Philippine Army is mostly untrained recruits, many of whom don't even have weapons.
In any case, weak forces mean that the Japanese can easily overrun the islands and prevent them from being used against them in the future. The whole point is that the Japanese are removing a future threat and securing the supply lines to the Dutch East Indies and Malaya against any possible future American threats, which does not require that America can actually current threaten them, merely that the Philippines is indeed located where it is and does indeed have naval and air bases which the United States could use. Which it was and which it did.
The naval and air bases in the Philippines were small and primitive. They could support no more than a handful of warships or aircraft.
Among other things, during the Russo-Japanese War, when Roosevelt inserted himself.
How does a US diplomatic initiative,
which Japan asked for, constitute US interference with Japanese military operations? How does that one incident, forty years earlier, establish an American record of such interference?
I think you are greatly overestimating the amount of independence any potential post-war ...
Post what war? You're arguing for Filipino collaboration with the US in
starting a war against Japan launched after several years of preparation.
... Filipino government will have...
It's not even clear that the Philippines would have cooperated with unilateral US intervention against Japan in OTL 1941. Such intervention would have led to quick Japanese conquest of the Philippines with dreadful consequences for the population. The Filipinos could see that - and could see no good reason for letting that happen. That was why they discussed declaring independence and neutrality if the US tried any such thing. I can't say how that would have played out, but it would be very awkward for the US to have to send soldiers to arrest the Philippine leaders and enforce US authority at gunpoint. That would be a colossal embarrassment for any US President calling for a declaration of war on Japan. Of course the Japanese were too blind to see it.
Once the Philippines are formally independent, the US would have no legal basis whatever for coercing Philippine participation in the war.
... and in any case as I specifically said, several times, waiting for the Philippines to become independent would, indeed, be the smart move. The problem is that it also requires waiting several years doing nothing...
Why? Will Japanese moves into SE Asia somehow cause the US to cancel its long-planned grant of independence? In 1941, an isolationist-led US will not go to war on the other side of the Pacific for the sake of other countries' interests, nor expect to do so in the future. So Japan can go right ahead with its conquests. And it would be very unlikely for the US to embark on a huge and costly military and naval build-up in the Philippines to support a future war with Japan for those other countries' interests. Especially since by the time such a build-up had proceeded far enough to support such a war, the Philippines would be independent.
That was rather my point. Since the President is elected, it was entirely possible that America's policy could dramatically change in short order.
I'll restate that for you: since the government of
any country is composed of human beings who may be replaced (because they die, or leave office by law, or lose elections, or are overthrown), it was entirely possible that
any country's policy could dramatically change in short order.
Therefore Japan must immediately attack
any country which could in the future
possibly have the power to attack Japan with dangerous force. The USSR, for instance.
Clearly annexation of the Philippines and other U.S. territories in the western Pacific, i.e. Guam. This would make it impractical for the United States to act in East Asia in any case without having to fight its way through Japanese-controlled seas where they could apply the Mahanian tactics they liked to attrit the U.S. force and ultimately annihilate it.
As of 1941, if the US tries to act in East Asia against Japan, Japan could easily seize Guam and the Philippines, achieving that exact result. There is absolutely no need for Japan to fight a pre-emptive war with the US now, unless the US President is likely to initiate action against Japan from the Philippines during Japan's Southern Operation. That seemed true of FDR OTL; it would not be true of Wheeler.