you may find details here
It is quite interesting that he raised a new conception, of “global political cities”, instead of the nation state as main actor in international relations.
He also gave some indicators of how to analyze Asian ‘ influences in Washington D.C.
eg: embassy (China, the largetest), FTA, official/working visits
Although he tired to explain Japan’s relative inactivity in Washington in a comparative perspective, he ended up in talking more about rising China.