By Richard Javad Heydarian
Since his ascent to presidency, Rodrigo Duterte has repeatedly threatened to upend Philippine foreign policy. In stark contrast to his predecessor, Benigno Aquino III, he has as frequently lavished China with praise as he has lambasted America with verve and venom.
Duterte's personal envoy to Washington owns the Trump Tower in Manila.
In the past few months, the Philippine-U.S. alliance has suffered an unprecedented setback. Diplomatic exchanges have been rife with tensions, while military cooperation has been downgraded, although it is unclear whether it has been formally downgraded.