How to decode Digong's diversion?

CAN Rodrigo Duterte genuinely call for separation of Mindanao without being a political tool of America?

To begin with, such a call was originally America's. Recall the tour of duty of Kristie Kenney, United States ambassador to the Philippines from 2006 up to 2012. She spent much of her time visiting Mindanao, seeing to its development, particularly the construction of airports whose quality, as observed by experts, could rival those of Clark Airbase. The question was raised: Why build airports meant for use not by ordinary passenger planes but by a high-end military air force?