Duterte Crimes Against Humanity Trial

The ICC Appeals Chamber's decision is being hailed as a major vindication for the families of thousands of victims killed by state-armed death squads.

Duterte, who is 81, had argued that the court lacked authority over his actions while he was in power.

Prosecutors allege that his anti-drug campaign was a systematic attack on civilians that resulted in widespread extrajudicial killings.

The ruling ensures that the high-profile trial will proceed in The Hague, despite the Philippine government's refusal to cooperate with the investigation.