Blackstone
Brigadier
Trump outlined an interested-based foreign policy, and it opens up Option 4: Sino-American co-leadership of Asia. It may take the form of US-China collusion in a G-2 format, or a Concert of Asia involving the four great powers US, China, India, and Japan. Asia is too important to the US, which is a Pacific Nation, so for the foreseeable future, there's no chance US will simply walk away.I too hope that the US and China become allies and share common interests. Believe me, as a Chinese American, it is in my personal interests that China and the US are on best terms with each other.
With that said, I don't think the US and China will be allies, ever. At least not in the near future. Why? Like abc123 said elegantly above, "There can't be two sheriffs in town". The US has so much interests in East Asia, which happens to be China's backyard. To avoid conflict, we got 3 options: 1) China moves out of Asia (and wanders in the desert for 40 years?); 2) China backs down and submits to the US; 3) the US backs down.
Option 1 won't work, assuming Lex Luthor doesn't find enough Kryptonite and create new land out of the ocean. Even then, there would be no guarantee that majority of Chinese will want to move. Keep in mind that we are under the assumption that China will be a democratic society by then. My experience is that no one wants to move, especially when that piece of land has been your home for 5000 years...
Option 2 might work if China is still an authoritarian government, where a few elites decide the fate of the entire nation. In a democratic society, I can't see how majority of the Chinese people would be willing to submit to anyone else in their own backyard. It would be suicidal for any Chinese government domestically. Any democratically elected Chinese leader who does such thing will be impeached and kicked out of office immediately. Just imagine what would happen to a US president who submits to Mexico...
Option 3? This option seems to be the least damaging for both nations. Most Americans don't even care about Asia (heck, many Americans don't even know where Asia is). However, I don't see how and why the US would willingly back down and play second fiddle in East Asia without a fight. The US has so much interests in Asia that it would be unimaginable to back out and give them up...
Thus, the US and China are bound to lock horns in the near future. My only hope is that the horn-locking stays in "strategic partner / competitor" stage.
Mods- please move this post to Strategy section, there's no option for me to do that.