It wouldn’t have mattered if he had kissed obama’s a$$ on public tv. The US does NOT have anyone’s back at least for another four and a half months and our allies know it.
Normally the US would be providing this support but Japan knows we are not going to do anything under the puss king and can’t afford to allow continued Chinese expansion unchecked.
If Duterte wants U.S. support then he has an odd way of showing it.