US Vice-President Joe Biden was correct when he said in Tokyo on Tuesday, there is "the need for crisis management mechanisms" for the East China Sea Air Defense Identification Zone, because, as he pointed out, "the prospect for miscalculation and mistake is too high".

So he has plenty of things to straighten out while he is in Beijing, on the second leg of his three-country Asia trip.

First of all, despite trying to present the image of being an impartial mediator, Washington has obviously taken Japan's side. Turning a blind eye to Tokyo's provocations, the root cause of the tensions, the United States is wrongly pointing an accusing finger at China for "unilaterally" changing the "status quo" in the East China Sea.