I have to,disagree. US rebalancing certainly has everything to do with entending the tenure of US hegemony in west pacific beyond when it would have faded due to shifting balance of power had the US continued it's previous deposition.
"Refocusing on dynamic region" is the sort of statement which is true but not convey the nuances of the situation. It in fact is selected specificLly to obscure to nuances, eventhough most people are not fooled.
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The US has a regional hegemony in the Western Hemisphere (Monroe Doctrine), but no hegemony anywhere else. Consider these events and tell me if a true hegemony would allow them to happen;
1) The Philippines told the US military to get out, and we complied.
2) North Korea stick it to us every chance they get. We throw words back at them.
3) Okinawa told the US to close our base, and we closed it even though we didn't really want to.
4) Japan conducted secret meetings with North Korea without informing the US.
5) Japan whitewashes WWII history and say they were victims and not aggressors. We let them get away with it.
6) We tell Israel to stop building settlements on the West Bank, and they build even more.
7) The US drew a red line in the sand on chemical weapons in Syria. Assad used them anyway. Assad is still in power, with military backing from Russia and political backing from both Russia and China.
8) US got the UN to impose sanctions on Iran, but many nations ignore some of the sanctions. Even our supposed friend and ally France (you might be right if you say France was never our true ally).
9) NATO countries (if we could be a hegemony anywhere, this is it!) routinely tell us where and when we could hold military exercises. Our main battle tanks are not allowed in some towns and cities.
10) NATO was suppose to keep Germany down and the Russians out. It's done neither.
The bottom line is the US is a regional hegemony in the Western Hemisphere, but not a global one, and definitely not in Asia. Of all countries in the world, the Middle Kingdom is the only one that can achieve hegemony in Asia. China knows it, the US knows it, Japan knows it, Taiwan has already bent knees, and South Korea isn't far behind.
I say again, the US isn't a hegemony in Asia, and we're not trying to be one.