https://youtu.be/rHjlCmdyesY?t=8m58s
I don't know if Duterte is serious; but if he does push away every single US military facility from the Philippines, that's basically giving China the South China sea. All of it. Who would've thought that, 5 years ago?
Next step is finding some South Korean Duterte who expels all US troops from the Asian mainland. That should happen in less than 10 years, if China has any power at all. Japan would be trickier, but Okinawa is not that much of a threat. At any rate, the USG is going to lose its dominion of the Western Pacific very fast. And once that's over...