Former Philippine President Rodrigo Duterte said he takes full responsibility for his administration's "war on drugs", in a video message posted on his Facebook account, as he braces for a legal battle at the International Criminal Court.

Former Philippines President Rodrigo Duterte is now in the custody of the International Criminal Court (ICC) in the Netherlands following his dramatic arrest in Manila the day before over a brutal, years-long anti-drugs crackdown that left thousands of his citizens dead.

Duterte was arrested at Manila airport on Tuesday and within hours was on a chartered jet which flew via Dubai to The Hague, where the ICC sits. The 79-year-old could become the f