Among other things, Xi Jinxing focuses things such as expanding China’s power as a means of distracting the masses from any dissatisfaction with the CCP and domestic issues.
But once you make a claim XYZ, you’ve forced your own hand. You can’t back off or you will appear weak.
There is a huge debate whether the United States would have entered the Pacific War even if they weren’t directly attacked.
The debate would be a hijack, so let’s not go there. However, Japan believed once they started the way, they needed to remove the threat from the US.
If the States were to have entered the war regardless, then it was better for Japan to have chosen the time and place for the attack. Had Japan gone after the British and Dutch colonies and left the US and the Philippines alone, but then had the US and Japan wound up going to war, it would have been much, much harder for Japan.
A lot of scenarios have China placing a quarantine on Taiwan or a blockade and anticipating that Taiwan surrenders before the US comes to Taiwan’s aid.
But the problem is that the US may get involved anyway. Of course, they may not.
Of China invades and the US enters anyway, China would certainly be much better off attacking America first. But it’s a dangerous gamble because they wouldn’t know what the US would have done.
Japan considers any forceful steps by China to subdue Taiwan as a threat to its sovereignty because China would control the shipping lanes to Japan for oil and other resource. They may get in and if they do, what will the US do?
The problem is no one knows what may happen.
It’s these kind of unknowns that drive leaders crazy