Duterte is facing charges relating to a long and bloody war on drugs in which thousands were killed.
The 80-year-old is accused of crimes of humanity over his bloody war on drugs that left thousands killed.
Ali Kushayb led the Janjaweed, a group whose campaign of terror led to hundreds of thousands of deaths.
The warlord remains at large but victims hope the ICC charges will renew efforts to capture him.
The three military juntas, who came to power through coups, say the judicial body is 'incapable' of handling 'proven war crimes'.
The former president of the Philippines is accused of being involved in the deaths of dozens of people.
This is the court's first-ever confirmation of charges hearing without the accused present.
Secretary of State Marco Rubio denounces the court as "an instrument of lawfare" against the US and Israel.