I repeat, what the US did does not mean it has the same meaning to us. We said we were monitoring the US plane and did not deem it threaten our national airspace because its intent was not heading toward our national airspace, therefore, our response was masterful, which is to save "oil and energy" and keep mute.
You are mistaken that the US are trying to embarrass us. If they want to embarrass us, then they need to head their aircrafts toward our national airspace, not by purely visiting the zone.
Also, we already know the US sides with Japan because we are not friend alright? The question we want to know is whether the US will directly involved in a war with us over Japan. Do you understand?
We don't need to go to your airspace cause we don't want it. Just the part where the islands are that is owned by Japan. And if you want to test that theory about U.S. not supporting Japan, go right ahead. Land those troops on those islands and see what happens.