The International Criminal Court where detained former Philippine President Rodrigo Duterte is being taken after his arrest in the Philippines is a court of last resort for the most serious international offenses,

Following a request from the International Criminal Court (ICC), the Philippines arrested former President Rodrigo Duterte due to an investigation into thousands of killings in a violent crackdown on drugs that was the hallmark of his rule.

The arrest represents a significant victory for the I.C.C., but only a narrow set of circumstances made it possible.