Philippine President Rodrigo Duterte warns Barack Obama not to question him about extrajudicial killings, or "son of a bitch I will swear at you" during an upcoming summit in Laos

MANILA, Philippines (AP) — Philippine President Rodrigo Duterte warns Barack Obama not to question him about extrajudicial killings, or "son of a bitch I will swear at you" during an upcoming summit in Laos.