One of the fiercest critics of Philippines President Rodrigo Duterte and his bloody crackdown on illegal drugs was arrested Thursday evening on drug-related charges in what supporters say is a politically motivated vendetta.

South Korea's ousted President Park Geun-hye will meet with prosecutors Tuesday, the first time since she lost her executive immunity.

Hong Kong's former leader has been jailed for 20 months, becoming the city's highest-ranking official to be put behind bars.

South Korea President Park Geun-hye's removal from office comes at the end of a week of huge instability in East Asia.