I will respectfully disagree with you on the implications of a more isolationist United States under President Trump on the continuing expansion of the Japanese Navy and Japan's military budget as a whole.
If Japanese products were replaceable by American products from a quality standpoint, Toyota Motor Company would not enjoy the dominance it does so today. If American goods and services are replaceable by inferior Chinese products from a quality standpoint, that would speak volumes on what American quality really is, in various ways.
A steady exit of American corporations from the Chinese market would not be a guarantee of Japanese success, merely an opportunity.
Whether you think Japan Inc capable of exploiting such opportunities, I leave to your own consideration.
The more Japanese expand their presence in the Chinese market, the more China will think they own Japan. It could make China more bold in expansion in the western Pacific and on the Senkaku islands and the US will just sit back and say "Have fun Japs"
I think there is a temptation to want the US to leave with Japan beefing itself up some more. But things are so complex today and vast. Take military capabilities.. if Japan was to welcome a US leave, they would need their own aircraft carriers, their own nuclear arsenal, at least double the manpower of the military, double the number of aircraft, and so. Japan needs to keep in mind that it is a middle weight and not a heavy weight. Japan may have good relations with neighbors such as Taiwan and the Philippines. But that is not the same as having them as part of Japan. Those countries still have their own nationalities and desire for free determination.
The most stable and strongest force is the combination of both the US and Japan together.
Edited by JasonJ, 10 November 2016 - 1848 PM.