Philippine President Rodrigo Duterte gestures as he delivers speech before members of the Scout Rangers regiment at a military training camp in San Miguel town, Bulacan province, north of Manila on September 15, 2016. Rodrigo Duterte shot dead a justice department employee and ordered the murder of opponents, a former death squad member told parliament September 15, in explosive allegations against the Philippine president. / AFP / TED ALJIBE (Photo credit should read TED ALJIBE/AFP/Getty Images)
Video Ad Feedback
Duterte is controversial abroad, popular at home
02:29 - Source: CNN
War on drugs in the Philippines 11 videos
Philippine President Rodrigo Duterte gestures as he delivers speech before members of the Scout Rangers regiment at a military training camp in San Miguel town, Bulacan province, north of Manila on September 15, 2016. Rodrigo Duterte shot dead a justice department employee and ordered the murder of opponents, a former death squad member told parliament September 15, in explosive allegations against the Philippine president. / AFP / TED ALJIBE (Photo credit should read TED ALJIBE/AFP/Getty Images)
Video Ad Feedback
Duterte is controversial abroad, popular at home
02:29
Now playing
- Source: CNN
Inmates sleep on the ground of an open basketball court inside the Quezon City jail at night in Manila in this picture taken on July 21, 2016. There are 3,800 inmates at the jail, which was built six decades ago to house 800, and they engage in a relentless contest for space. Men take turns to sleep on the cracked cement floor of an open-air basketball court, the steps of staircases, underneath beds and hammocks made out of old blankets. / AFP / NOEL CELIS / TO GO WITH AFP STORY: Philippines-politics-crime-jails, FOCUS by Ayee Macaraig (Photo credit should read NOEL CELIS/AFP/Getty Images)
Video Ad Feedback
CNN goes inside massively overcrowded jail
02:26
Now playing
- Source: CNN
philippines duterte war on drugs watson pkg_00002607.jpg
Video Ad Feedback
A brutal war on drugs in the Philippines
03:24
Now playing
- Source: CNN
philippines duterte war on drugs watson pkg_00032101.jpg
Video Ad Feedback
Philippines drug war sparks outrage, fear
03:36
Now playing
- Source: CNN
philippines duterte obama sob starr dnt lead _00002106.jpg
Video Ad Feedback
White House cancels Duterte meeting after name-calling
02:10
Now playing
- Source: CNN
Obama at G20 summit press conference
Video Ad Feedback
Obama on Duterte: 'Clearly he's a colorful guy'
01:31
Now playing
- Source: CNN
This combination image of two photographs taken on September 5, 2016 shows, at left, US President Barack Obama speaking during a press conference following the conclusion of the G20 summit in Hangzhou, China, and at right, Philippine President Rodrigo Duterte speaking during a press conference in Davao City, the Philippines, prior to his departure for Laos to attend the ASEAN summit. US President Barack Obama on September 5 called a planned meeting with Rodrigo Duterte into question after the Philippine leader launched a foul-mouthed tirade against him. / AFP / Saul LOEB AND MANMAN DEJETO (Photo credit should read SAUL LOEB,MANMAN DEJETO/AFP/Getty Images)
Video Ad Feedback
Philippine President Duterte regrets rant on Obama
02:09
Now playing
- Source: CNN
Philippines' president-elect Rodrigo Duterte speaks during a press conference in Davao City, in southern island of Mindanao on May 26, 2016. Explosive incoming Philippine president Rodrigo Duterte has launched a series of obscenity-filled attacks on the Catholic Church, branding local bishops corrupt "sons of whores" who are to be blamed for the nation's fast-growing population. / AFP / MANMAN DEJETO (Photo credit should read MANMAN DEJETO/AFP/Getty Images)
Video Ad Feedback
Philippines drug war sparks outrage and fear
05:16
Now playing
- Source: CNN
Philippine jail Watson Stevens NewsStream segment_00022913.jpg
Video Ad Feedback
CNN goes inside Philippines' overcrowded jails
07:42
Now playing
- Source: CNN
phillippines duterte drug war watson pkg_00021112.jpg
Video Ad Feedback
Philippines cracks down on drugs
02:27
Now playing
- Source: CNN
phillippines duterte drug war watson pkg_00011921.jpg
Video Ad Feedback
Death toll rising in Philippines' war on drugs
02:36
Now playing
- Source: CNN

Story highlights

Obama was to meet with the South Korean President instead

Duterte says he is "not answerable to anyone except the Filipino people"

Vientiane, Laos CNN  —&n