U.S., South Korea to defend against 'evolving' North Korean threat

WASHINGTON/SEOUL (Reuters) - U.S. Defence Secretary James Mattis and his South Korean counterpart agreed during a phone call on Monday to strengthen their defence against "the evolving North Korean threat," the Pentagon said, amid reports the North may be preparing a new missile test. Mattis, who is to visit South Korea on Thursday, reaffirmed to South Korean Defence Minister Han Min-koo the U.S. commitment to defend the country and "provide extended deterrence using the full range of U.S. capab