New Zealand Prime Minister Jacinda Ardern, whose empathetic handling of the nation's worst mass-shooting and health-driven response to the coronavirus pandemic led her to become an international icon but who faced mounting criticism at home, said Thursday she was leaving office. Fighting back tears, Ardern told reporters in Napier that February 7 will be her last day as prime minister. ''I am entering now my sixth year in office, and for each of those years, I have given my absolute all,'' she said. She also announced that New Zealand's next general elections would be held on October 14, and that...