His surprise arrest by Philippine police at the request of the ICC caused outrage among his army of supporters, who called it a kidnapping at the behest of a foreign court.

President Ferdinand "Bongbong" Marcos Jr, and his Vice-President, Sara Duterte, are embroiled in a bitter feud, and a battle for power.

While some polls show that a majority of Filipinos back the international investigation, many of Mr. Duterte’s supporters believe that he is a victim of political persecution by President Ferdinand Ma...