Philippine President Rodrigo Duterte speaks during a news conference in Davao city, southern Philippines August 21, 2016. REUTERS/Lean Daval Jr/File Photo

Philippine President Rodrigo Duterte speaks during a news conference in Davao city, southern Philippines August 21, 2016. REUTERS/Lean Daval Jr/File Photo

Philippine President Rodrigo Duterte speaks during a news conference in Davao city, southern Philippines August 21, 2016. REUTERS/Lean Daval Jr/File Photo

September 5, 2016 5:52 AM (UTC+8)