Rodrigo Duterte was sworn in Thursday as president of the Philippines, with some hoping his maverick style will energize the country but others fearing he will undercut one of Asia's liveliest democracies amid threats to kill criminals en masse. The 71-year-old former prosecutor and longtime mayor of southern Davao city won a resounding victory in May's elections in his first foray into national politics. Duterte, who begins a six-year term as president, captured attention with promises to cleanse the poor Southeast Asian nation of criminals and government crooks within six months — an audacious pledge that was...
