The recent tensions between China and Japan are threatening to bring the world’s top three economies—the United States, China, and Japan—into a major armed confrontation.
As in previous millennia of history, China’s objective for its periphery—the East Asia/Western Pacific region—is subordination of some kind or degree. Japan, being the only indigenous major power in the region, and allied formally with the United States (Russia having ceased to be an Asian power), is the main obstacle to that desired suzerainty.
If underlying geopolitical factors are the overriding cause of the recent decline in relations between China and Japan, then the current trajectory is likely to persist, for there is little reason to believe that those factors will change.