Judges upheld the court's jurisdiction, ruling that alleged crimes occurred while the Philippines was still an ICC member, allowing the case to proceed.
Duterte faces three counts of crimes against humanity, marking a potential first ICC trial against a former Asian head of state.
Duterte once confessed to the killings, so why is his trial so complex?
What political fallout led the current president to hand Duterte over?
Could Duterte's claims of being mentally unfit derail his historic trial?
Will the ICC trial shatter the powerful Marcos-Duterte political dynasty?
Has the ICC now set a trap for world leaders who quit the court?
What does this landmark case mean for other powerful leaders in Asia?