Former Philippines President Rodrigo Duterte has made his first appearance via video link at the International Criminal Court in the Netherlands, where he faces murder charges related to his “war on drugs.

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.

Harry Roque, also a lawyer seeking to represent him in the ICC case, said the question of jurisdiction over the Philippines, which withdrew from the global court when Duterte was president, should be addressed before any further proceedings.