Our policy vis-a-vis China and Taiwan is called "deliberate ambiguity" wherein we leave unclear the extent to which we would aid Taiwan in defending itself if attacked by China. China claims the island as a rogue province.
On more than one recent occasion, President Biden has said that the US would defend Taiwan if attacked, and then had his words "clarified" by the White House munchkins who say that our policies have not changed. You might be wondering what is going on.
It is easy to say it is foggy old Joe mixing up his words again, and that may be the case. I wonder if it isn't the occasionally crafty old Joe making sure China truly doesn't know what we'd do if Taiwan is attacked? Effectively making our Taiwan policy more deliberately ambiguous than formerly.
Who knows, it might work. Or it might start World War III.