Italy's most wanted mafia boss, Matteo Messina Denaro, was arrested by armed police at a private hospital in Sicily on Monday, where the man who has been on the run since 1993 was being treated for cancer.

China's Foreign Minister Wang Yi on Tuesday signed agreements in Tonga for police equipment and fisheries cooperation on a tour through the Pacific islands region where Beijing's ambitions for wider security ties has caused concern among U.S. allies.